all india prelims test series 2019 - tnl-uploads.s3-ap ... · either cricket or hockey is played by...

1 AIPTS 2019 (CSAT - 5) (E) Answer Key Byju’s Classes: 9873643487

ALL INDIA PRELIMS TEST SERIES – 2019

(CSAT - 5)

Answer Key

Ans:1)(d)

Explanation: Let number of notes of each

denomination be x.

Them, x + 5x + 10x = 480

16x = 480

x = 30 Hence, total number of notes, 3x = 3 × 30 =

90

Hence, option (d) is the correct answer.

Ans:2)(b) Explanation: In one hour the hour hand will

rotate 1 unit (say 10 to 11)

That means rotation of 30

12

360

degrees in

one hour.

Therefore, degrees by which it will rotate in 5

hours (i.e. from 10 AM to 3 PM) = 30 × 5 = 150 degrees.

Explanation for Questions (3 to 4): Let the

footballer, tennis player, Basketball player,

cricketer and the Hockey player be represented by F, T, B, V, C and H.

Thus, by 1st statement – football player is

sitting to the left to tennis player, we get:

Also, Volleyball player is sitting opposite the

Basketball player. This is possible is two

ways:

Also, Hockey player is sitting between the

cricketer and the Basketball player. Thus, we

have following two possible sitting arrangements:

Ans:3)(d)

Explanation: Either Cricket or Hockey is played by person who sits opposite to the

footballer.

Ans:4)(b)

Explanation: Cricket is played by the person who sits between the friends who play hockey

and volleyball.

Ans:5)(c)

Explanation: First, we need to convert the

given statements in to one of the four formats – ALL, NO, SOME or SOMENOT. Then we

draw venn diagrams to get the relations.

Coffee is a language in itself – All Coffee is

language

Language is a tool for success – All language

is success/tool for success From this the following diagram can be

drawn.

From the diagram –

Statement 1 is a valid conclusion. The

students lie in the larger circle of language and language is a tool for success.

Statement 2 is an invalid conclusion.

Statement 3 is a valid conclusion. From the

diagram we have all students are languages.

In the conclusion part, ALL form can be

converted as SOME form. The students lie in the larger circle of language. Thus we can

safely say that some languages are known by

students.


Ans:6)(b) Explanation:

From the diagram – Statement 1 is an invalid conclusion.

Producers and bikers are mutually exclusive

groups.

Statement 2 is a valid conclusion. The given

ALL form of sentence can be converted as

SOME form. Or we can directly see that producers group is a part of rich people’s

group.

Statement 3 is a valid conclusion. There is a

overlap between actors and producers’ group.

Ans:7)(d)

Explanation: Let’s find out the bronze

medals as a percentage of the total medals

won by a country:

For Canada : 100

82

34

= 41.46%

For New Zealand : 100

45

17

= 37.78%

For Nigeria : 100

36

14

= 38.89%

For South Africa : 100

40

17

= 42.5%

Hence, South Africa has the highest

percentage of bronze medals as a percentage

of the total medals won by it.

Note: Here we do not need to calculate values for Canada and New Zealand as we can tell

just by observing and comparing that they

are definitely less than the value of South

Africa.

New Zealand 45

17

< South Africa 40

17

, as the

value of denominator in case of New Zealand

is more.

Canada 82

34

< South Africa 40

17

, which can

also be written as 80

34

, as the value of

denominator in case of Canada is more.

Ans:8)(c)

Explanation: Number of bronze medals won

by Australia = 46

Now, England had definitely won more

medals than Australia. So, we need not

calculate for it. Number of medals won by Canada = 32 + 16

+ 34 = 82

Number of medals won by India = 15 + 30 +

19 = 64

Number of medals won by New Zealand = 14 + 14 + 17 = 45

Number of medals won by South Africa = 13 + 10 + 17 = 40

Number of medals won by Nigeria = 11 + 11 +

14 = 36

So, the number of bronze medals won by

Australia exceeds the total medals tally of New Zealand, South Africa and Nigeria. Thus,

option (c) is correct.

Ans:9)(a)

Explanation: Let the cost price and selling

price of the mangoes be represented by CP and SP.

CP of 8 mangoes = Rs. 12

Therefore, CP of 1 mango = 8

12

= Rs. 2

3

.

Also, SP of 12 mangoes = Rs. 8

Therefore, SP of 1 mango = 12

8

= Rs. 3

2

.

Therefore, loss percentage = 100

CP

SP–CP

=

100

2

33

2–

2

3

=

100

2

36

4–9

= 100

3

2

6

5

= 100

9

5

= 55.5%

Ans:10)(b)

Explanation: Length of diagonal = distance

covered in 4 min = 60

410006

= 400 m

Therefore, area of the field = 2

1

× diagonal2 =

4004002

1

= 80,000 m2

Hence, option (b) is the correct answer.

Ans:11)(d)

Explanation:

A Female Old Indian

B Male Young Non-

Indian

C Female Young Indian

D Female Old Indian

E Male Young Non-

Indian

F Male Old Non-Indian

Thus, A and D are old Indian females. Thus,

both A and D are tall.

Ans:12)(c)

Explanation: Only Q is sitting between P and

T. Therefore, there are two possible arrangements of P, Q and T, i.e. as PQT or

TQP. Furthermore, as R is to the left of T and

S is to the right of P, the two arrangements

possible are RPQTS and RTQPS.


Both these arrangements satisfy the conditions given in the question. Thus, S is

on the right-most side in both of these

arrangements.

Hence, option (c) is the correct answer.

Ans:13)(b)

Explanation: The year 1979 is an ordinary

year and so it has 1 odd day. So, the day on

10th January 1980 is one day beyond the day

that was on 10th January 1979. As January

10th, 1980 was a Saturday, January 10th, 1979 must be a Friday.

Now, 7 days back, i.e. on 3rd of January,

1979 it must have been a Friday too. So, on

1st January, 1979 it must have been a

Wednesday.

Ans:14)(c)

Explanation: Let’s assume the amount of

milk and water in the original mixture is 2x

and x litre respectively. Now, 0.9 litre of

mixture is taken out. In the 0.9 litre of the mixture, the amount of

milk = 9.0

3

2

= 0.6 litre and the amount of

water = 0.9 – 0.6 = 0.3 litre.

Thus, milk left in the container = 2x – 0.6

And water left in the container = x – 0.3 Now 0.9 litre water is added.

Hence, amount of water in the new mixture =

x – 0.3 + 0.9 = x + 0.6

It’s given that milk and water in the new

mixture are in the ratio of 3 : 2.

Hence, 2

3

6.0x

6.0–x2

Or 4x – 1.2 = 3x + 1.8

Or x = 3 litre

Now, volume of container = 2x + x = 3x = 3 ×

3 = 9 litre

Hence option (c) is correct.

Ans:15)(c)

Explanation: The wrong average = 45

30

initiallyusednumbers30theofSum

…….

(i)

Now, 50 was mistakenly read as 80. That is sum of 30 numbers was to be 30 less

than the wrongly calculated average.

Thus, the correct average =

30

30–initiallyusednumbers30theofSum

= 30

30–

30

initiallyusednumbers30theofSum

=

45 – 1 = 44.

Ans:16)(b)

Explanation: The two hands will stand

opposite to each other once between 1 am

and 2 am, 2 am and 3 am, 3 am and 4 am, 4

am and 5 am, and 5 am and 6 am. Therefore, a total of 5 times.

Ans:17)(d)

Explanation: In the passage it is clearly

mentioned that Subhash Bose thrashed his teacher because he made a racist remark

against the Indian students. Thus we can

assume that he was against the practice of

racial discrimination. Thus Option (d) is

correct answer.

Option (a) is incorrect. Whether he opposed Mahatama Gandhi’s principle or not can’t be

assumed from this passage. Similarly, we

can’t assume anything about his belief in

vengeance from this passage. Therefore,

Option (b) is also incorrect. Option (c) is also incorrect as passage in not clear if he was a

student leader or not.

Ans:18)(a)

Explanation: The passage discusses how the

boundaries of African nations were decided even without the informed consent of African

rulers and African people. It also mentions

that the raw materials of Africa were

extracted by the colonial powers. Thus,

option (a) is the correct answer. Most of the indigenous rulers were illitreate

or not can’t be concluded from the passage.

Also, even if we say that most rulers were

illitreate that statement does not sum up the

passage. Thus option (b) is incorrect.

Similarly, Option (c) is also incorrect. Nothing is mentioned about the fees in the passage.

Option (d) is also incorrect. The passage does

not discuss about “market” and “capitalist”.

Ans:19)(c) Explanation: The passage reads “With some

variance in emphasis, the same basic tenets

can be found underpinning the so-called

“high performance work systems.” Here the

same basic tenets pertains to “various

attempts to break free from the traditional bureaucratic structure” and “terms

(preferably cross-functional), lateral

communications, the minimization (if not

outright removal) of hierarchy, and the sparse

use of rules. Informality” Hence Option (c) is correct.

Option (a) is incorrect as the passage reads

“while bureaucracies are generally identified

with governments, they can be the part of any

large organization”. Option (b) is incorrect

such generalization cannot be made. Moreover nowhere in the passage

bureaucracy is identified as riddled with red

tape and corruption hence option (d) is

incorrect.


Ans:20)(a) Explanation: Option (a) is correct. The

passage says that air purifier technology

depends on other factors like a well-ventilated

house. It means that it’s not an isolated

technology. Option (b) is incorrect. The passage denies

this assertion. It says that unlike water

purifiers people can’t shut themselves from

impure air. Option (c) is incorrect. The

passage just says that for effective working of

air purifier technology will-ventilated house is required. It doesn’t mean whether Indians

have ventilated house available to them or

not. Option (d) is also incorrect. The passage

gives example of Aquaguard as a water

purifier. But it can’t be inferred from this that Aquaguard is the most famous brand.

Ans:21)(a)

Explanation: Option (a) is correct. The first

sentence of the passage talks about enough

evidences. So, there is an implicit assumption that credible research has been done, which

have given these evidence.

Option (b) is incorrect. The passage says that

effective policy actions are required. It is not

clear whether incorrect as the passage says that environment performance does not

automatically improve with nation income.

Here assumption is made that efforts need to

be taken to maintain good environmental

performance. Thus, both can go hand in

hand. The given statement makes exactly opposite assumption. Option (d) is also

incorrect. The passage says that it may be too

expensive or too late to clean up. This doesn’t

mean that India can’t develop such

technologies despite India developing such technologies on its own, they can be too

expensive to be deployed on large scale.

Ans:22)(b)

Explanation: Option (a) is incorrect. This can

be inferred from the passage. But Pythagorean Theorem alone is not the central

theme. It is one of the two examples given in

the passage.

Option (b) is correct. The first sentence itself

says that many of the discoveries which are attributed to European scholars had

previously been worked out in India. The

passage then given two examples to support

this argument. Thus, it is the central theme.

Option (c) is incorrect. The passage just talks

about few discoveries. It doesn’t make any comparison between ancient Indian scholars

and their European counterpart in general.

Option (d) is also incorrect. This is not the

theme of the passage. Moreover, by just two

example it can’t be said that India has been regularly producing mathematical geniuses.

Ans:23)(c)

Explanation: Option (a) is incorrect. The

passage recommends for reciprocity in human values not reciprocity in international

agreements. That is each human being must

respect human rights of other person. Option

(b) is also incorrect. The passage doesn’t talk

about Indian constitution and legal system.

Option (c) is correct. The passage says that recognition of these universal values by many

countries in the world is the first step toward

their implementation, calling for everyone to

respect them. Each person holds the right not

to be abused. A logical corollary is to have an agreement of non-violation of human rights

i.e. right against abuse.

Option (d) is incorrect. The passage

recommends that human values should be

recognized universally. Thus, author many

agree that Human values should be recognized universally as fundamental rights

of citizens. But, option (d) is opposite to this.

Ans:24)(c)

Explanation: Statement (1) is incorrect. There are three main routes through which

viruses gain entry into a greenhouse: infected

plant material, people, and vectors. Sound

greenhouse management practices should

address the first two risks. Only first two

risks can be managed by sound greenhouse practices. Statement (2) is correct. Anyone

entering the greenhouse has the potential to

introduce viruses through contaminated

hands or clothing.

Statement (3) is also correct. Vectors can arrive with or without a virus, yet they pose a

problem.

Ans:25)(c)

Explanation: Option (a) is incorrect. Some

viruses are seed borne, meaning that a certain (often small) percentage of the seeds

carry a virus, and these plants become

infected soon after germination. Seeds don’t

spread virus, but act as a source.

Option (b) is incorrect. Vegetables or weeds growing adjacent to a greenhouse can attract

and be the source of significant populations

of vectors that can enter a greenhouse. They

are source of vectors, not viruses.

Option (c) is correct. Secondary spread of

viruses like TMV occurs after handling infected plants prior to touching healthy

plants. Option (d) is also incorrect. Anyone

entering the greenhouse has the potential to

introduce viruses through contaminated

hands or clothing. Workers must be


instructed to wash hands before beginning work, and guests should be instructed not to

handle any plant material. There is no

mention of guests spreading virus.

Ans:26)(b) Explanation: Option (a) is incorrect. Passage

talks about green house management in

general. However, this is not the key intent

behind the passage.

Option (b) is correct. Passage describes

various mediums through which virus are spread. It also talks about how to control

those and various factors involved.

Option (c) is incorrect. Passage does not

distinguish mechanically and organically

spread virus anywhere in the passage. Option (d) is also incorrect. Passage only

shows how vectors are responsible for

spreading virus. The statement given is

factually wrong.

Ans:27)(b) Explanation: Option (a) is incorrect. Author

does mention abut role played by the media

in transforming Europe. But that is certainly

not the central theme of the passage.

Option (b) is correct. The author, by giving examples of the role played by media in

transforming Europe and America, is

suggesting that Indian media should also

play an important role in transforming India.

Option (c) is incorrect. The media has a very

important role to play in this phase as it deals with ideas, not commodities. Though

this is stated in the passage, it is not the

main theme as it covers the essence of the

passage only partially.

Option (d) is also incorrect. Author is not discussing about the function of presenting

information to the public.

Ans:28)(d)

Explanation: Option (a) is incorrect. Though

it is mentioned that media provides idea, it is not the reason to call media ‘fourth estate’.

Option (b) is incorrect. In Europe and

America, it represented the voice of the

future, in contrast to the established feudal

organs which wanted to preserve the status quo. This shows media as a change agent.

Option (c) is incorrect. This is not stated in

the passage.

Option (d) is also correct. The established

organs …. Appellation of “fourth estate”. This

clearly indicated that the people had to create new organs which could represent them.

Hence the print media acquired the

appellation of “Fourth estate”.

Ans:29)(a) Explanation: Option (a) is correct. Europe’s

transition from the 16th to the 19th centuries

was market by turbulence, turmoil,

revolutions, wars, chaos, social churning and

intellectual ferment. This line suggests that Europe after passing such a phase emerged

as a modern society. So Indian will also take

this path.

Option (b) is incorrect. It is a guess of author

that the phase may last for another 20 year.

Option (c) is incorrect. It is not correct as it is one of the expected roles of media in this

phase.

Option (d) is also incorrect. There is nothing

in the passage to suggest modern society in

India will not emerge.

Ans:30)(c)

Explanation: In the 3rd paragraph, it clearly

says that due to the return of demobilized

soldiers, their capacity to handle modern

weapons and the post war economic problems the British looked forward to the end of the

war with trepidation.

Hence, both options (a) and (b) are correct.

Hence, correct answer is (c).

Ans:31)(b)

Explanation: Statement 1 is incorrect as

seen from the 1st paragraph where it says

that “…When Gandhi went on a fast in prison

in order to protest against British accusations

that he was responsible for the ‘August revolution’,”

Statement 2 is correct as seen in the 1st

paragraph where it is mentioned that the jail

authorities “… were not at all alarmed at the

prospect of his dying in their custody.”

Ans:32)(d)

Explanation: Though the passage says that

the Britishers found another watchword-

Divide and quit, but nowhere in mentions the

reason for favoring such policy. Hence none of the options can be said to be the reason.

Ans:33)(d)

Explanation: Statement 1 is correct as seen

from 1st paragraph which includes access to clean drinking water as one of the

components of nutrition security.

Statements 2 is also correct as economic

access is also one of the components of

nutrition security.

Statements 3 is correct as seen from the last paragraph – “therefore, under our conditions

enhancing agricultural productivity per units

of land, water and labour is the speediest way

of ending poverty induced chronic under-

nutrition”.


Hence, correct answer is (d).

Ans:34)(b)

Explanation: Statements 1 and 3 are not

correct as the passage nowhere mentions

them. Statements 2 is correct as seen from the 1st

paragraph – “The famine of jobs/livelihood

opportunities leads to the famine of food at

the household level, thus emphasizing the

need for ensuring that our development

strategies lead to job-led and not jobless economic growth.”

Hence, correct answer is (b).

Ans:35)(b)

Explanation: Statement 1 is incorrect as it is beyond scope, charges are described but

cheapness cannot be concluded.

Statement 2 is correct as seen from 2nd

paragraph.

Statements 3 is not correct because though

most of funds for terrorism in Kashmir come from Hawala route, it cannot be inferred as

the leading cause.

Hence, (b) is the correct answer: 2 only.

Ans:36)(d) Explanation: The reason why terrorists use

the hawala system is not mentioned explicity

in the passage. Also, statement 1 is false in

any case and other statements reach beyond

the scope of passage. Hence, the correct

answer is (d).

Ans:37)(c)

Explanation: Last 5 lines of paragraph states

multiple ways of Hawaladars have multiple

ways of earning from a transaction as well as settlement of obligations can be in various

forms.

Ans:38)(a)

Explanation: Statement 1 is correct from last

sentence of the 1st paragraph. Author says, oil exporters should adjust their medium-

term fiscal consolidation plans, thus,

indicating reforming energy subsidies.

Statements 2 is incorrect from 2nd sentence of

the 2nd paragraph. Thus, author states that, oil exporters have large buffers and thus,

allow them to avoid sharp cuts in government

spending.

Ans:39)(b)

Explanation: All options are correct from the passage except option (b) as guidelines are

given to maintain buffers (and not to phase

out them) from 2nd and 3rd sentence of the 2nd

paragraph.

Ans:40)(b) Explanation: Option (a) is incorrect. The

passage doesn’t say that terrorism is same as

revolution. So terrorists can’t be equated to

revolutionary. The passage doesn’t talk about

different perspectives. Option (b) is correct. Revolution is not

complete without terrorism. So, every

revolution must have an element of terrorism

in it.

Option (c) is incorrect. Revolution has an

element of terrorism. Its converse is not true. Option (d) is also incorrect. They don’t

complement each other. Revolution is bigger

set and terrorism is its subset.

Ans:41)(d) Explanation: Option (a) is incorrect. The

passage does say that everywhere there is

challenge in maintaining integrity and ethical

conduct. This doesn’t mean that there is

failure in meeting this challenge everywhere.

Option (b) is incorrect. The relationship of ‘quiet corruption’ and country’s economy is

not explained in the passage. So, such an

assumption won’t be valid. Option (c) is also

incorrect. Like option (b), the relationship

between ‘Grand Corruption’ and public trust is not mentioned in the passage. So, a

positive correlation can’t be assumed.

Ans:42)(d)

Explanation: The passage mentions that

laws are made by people, and law cannot be morally superior to politics. Here the passage

is criticizing the international Criminal Court.

Hence a correct justification of this can be the

fact that international Criminal Court lacks

popular mandate to qualify as a judicial body. Thus, option (d) is the correct answer.

Option (a) is incorrect because an

international legislative body may not be a

perquisite to an international tribunal. Option

(b) is incorrect because despite being closely

watched, international issues do involve violation of justice. Option (c) is also incorrect

because lack of enforcing mechanisms is not

discussed in the passage.

Ans:43)(d) Explanation: The passage discusses how

societal subversion of democratic elections by

criminal violence is largely ignored. Thus,

Option (d) is the correct answer.

Option (a) is incorrect because the passage

does not discuss the biggest threat to democracy. And author discusses drug war in

Mexico as one of the examples of “horizontal”

Threats to democracy.


Option (b) is incorrect because the collusion between criminal activities and central

government is not discussed here.

Option (c) is also incorrect because the harm

from organized violence and government

manipulation is not compared here.

Ans:44)(c)

Explanation: Statement 1 can be inferred

from the line, “In Kyoto what is being…” ,

which indicates that defining who owns the

atmosphere is a part of managing it. Line 3 mentions “who is responsible for its

destruction” as a requirement to managing

the resource. Line 4 says that technical

solutions are not as important for managing

global resources, and that understanding property rights is more important than

providing technical solutions. Hence,

statement 2 can also be inferred from the

passage. Thus, option (c) is the correct

answer.

Ans:45)(d)

Explanation: While the passage does

mention that only a few use atmosphere as a

free access property, it will be incorrect to

assume that everyone should is as a free access property. Besides, the phrase has a

sarcastic tome to it in the passage. Therefore,

(a) is incorrect. Similarly, while the passage

suggests that global natural resources are

owned by everyone (and everyone is a

stakeholder), it does not suggest that all should manage it. So option (b) is also

incorrect. Finally, global environmental

problems are not a creation of scientists,

therefore option (c) is also incorrect.


Ans:46)(d)

Explanation: The passage how FDR

remained calm and composed even during his

assassination attempt. In the last line it is

mentioned that if he could remain calm during a personal trauma, he can also remain

calm and solve national crisis such as Great

Depression. This is the most important

message of the passage. Thus, option (d) is

correct. Option (a) is incorrect. FDR cared for his

friend. However, the significance of friendship

is not discussed in the passage. Thus, it is

not the most important message discussed in

the passage. Option (b) is incorrect. This is

because god is not mentioned in the passage. Option (c) is also incorrect. Virtues are not

compared in the passage. Thus, whether

fearlessness is most important virtue or

second most important virtue can’t be

concluded from the passage.

Ans:47)(c) Explanation: Passage mentions Gandhiji’s

views about demerits of mendicancy which is

supported here by giving free meal. Thus, we

can infer that Gandhiji is against the practice

of providing aid to the undeserving. Therefore, option (c) is correct.

He is not against charity. He is against

mendicancy, i.e., giving charity to the

undeserving. Thus, Option (a) is incorrect.

Option (b) is also incorrect. Economic

degradation of the country is not discussed in the passage.

Option (d) is also incorrect. The author is not

concerned about the cleanliness of the

environment. He is just suggesting that meals

should be given for work in clean environment.

Ans:48)(d)

Explanation: The passage discusses that

even in ancient times republican governments

existed in ancient India. Also popular assembly was a well-established institution;

hence, democracy also existed at that time.

This is given in option (d) which is the correct

answer.

Option (a) is wrong as Chandragupta Maurya founded his empire is mentioned in the

passage but he started republics is not

mentioned. Nothing is mentioned about

common people likeness of republics. Hence,

option (b) is also incorrect. The passage

mentions “when India was unified politically under one emperor” meaning India was

unified politically. Nothing is told about

difficulty in unifying India politically. So,

option (c) is also incorrect.

Ans:49)(a)

Explanation: Let the number of apples and

mangoes with the vendor be 2x and 3x

respectively. So, Total number of fruits i.e.

apples and mangoes = 2x + 3x = 5x It is known that he sold all the fruits at Rs.

24 per piece.

Thus, the selling price = Rs. (24 × 5x) = Rs.

120x …………..(i)

Let the cost price of each mango = Rs. y

Cost price of 3x mangoes = Rs. (3x × y) Cost price of each apple = Rs. 20

Cost price of 2x apples = Rs. (20 × 2x) = Rs.

40x

Thus, the cost price of all fruits = Rs. (40x +

3xy) It is given that he sold all the fruits at profit

of 20%.

Selling price =

100

%Gain100

× cost price

Or selling price =


xy3x40100

120

………………(ii)

Equating (i) and (ii) we get, x120xy3x40

100

120

Or 1.2[40 + 3y]x = 120x

Or 1.2[40 + 3y] = 120

Or 40 + 3y = 100 Or 3y = 60

Or y = Rs. 20

Thus, the cost price of each mango is Rs. 20.

Hence, option (a) is the correct answer.

Ans:50)(a) Explanation: Since 4 men can complete the

work in 6 days, one man can complete the

same work in 24 days.

The, the amount of work done by 1 Man in 1

day = 24

1

units

Similarly, 4 women can complete the same

work in 12 days. So, one woman can

complete the same work in 48 days.

The amount of work done by 1 woman in 1

day = 48

1

units

Therefore, the amount of work done by 1 man and 1 woman together in 1 day =

16

1

48

3

48

12

48

1

24

1

units

Hence, 1 man and 1 woman together can

complete the work in 16 days.


Ans:51)(a)

Explanation: Let the price (in Rs.) of each

apple, banana and mango be ‘a’, ‘b’ and ‘c’

respectively.

It is given that cost of 5 apples, 6 bananas and 8 mangoes is Rs. 50

Accordingly, we get: 5a + 6b + 8c = Rs. 50

…..(i)

Also, it is given that cost of 10 apples, 9

bananas and 7 mangoes is Rs. 100

Hence, we get: 10a + 9b + 7c = Rs. 100 ……(ii) Adding (i) and (ii) we get,

15a + 15b + 15c = Rs. 150

Or a + b + c = Rs. 10

As we have to find out the cost (in Rs.) of 2

apples, 2 bananas and 2 mangoes, So, 2 (a + b + c) = 2 × 10 = Rs. 20


Explanation for Question (52 to 53): Let us

analyze the given statements one and draw

the table accordingly. Statement 1 : The person who was elected in

1902 presided over the session which was

held in Ahmedabad.

Person Year City

1902 Ahmedabad

Statement 2: Mohan was not elected in 1905

and he presided over the session which was

held in Madras.

Person Year City

1902 Ahmedabad

Mohan 1905 Madras

Statement 3: Edulji and Surendra were

elected in 1901 and 1902 respectively.

Person Year City

Edulji 1901

Surendra 1902 Ahmedabad

Mohan 1905 Madras

Statement 4: The session in Bombay was

held three years before the session which was

held in Calcutta. It is evident from the above

table that clearly, session in Bombay was

held in 1901 and subsequently session in

Calcutta was held in 1904.

Person Year City

Edujli 1901 Bombay


Mohan 1905 Madras

1904 Calcutta

It is evident from the above table that session

in madras was held in 1903 as it can’t be

held in the year 1905.

Person Year City

Edulji 1901 Bombay


Mohan 1903 Madras

1904 Calcutta

1905

Statement 5: Gopal presided over the session which was held in Banaras. So we

get:

Person Year City

Edulji 1901 Bombay


Mohan 1903 Madras

Chanda 1904 Calcutta

Gopal 1905 Banaras

Ans:52)(c)

Explanation: Clearly, Edulji was elected in

1901 and presided over the Bombay session.

Ans:53)(a)

Explanation: Clearly, Mohan was elected in

1903.

Ans:54)(a) Explanation: Cost price of the first article =

Rs. 2,500.


As we know that he sold the first article at a gain of 20%.

Selling price =

CP100

%Gain100SP

So, S.P. of the first article =

2500100

20100

= 2500

100

120

= Rs. 3000

Total C.P. of both the articles = (Rs. 2500 +

Rs. 2000) = Rs. 4,500 Total gain on the whole transaction = 16%

Total S.P. = 4500

100

116

= Rs. 5,220

Selling price of second article = Total Selling

price – Selling price of first article = Rs. 5200

- Rs. 3000 = Rs. 2,220 Thus, he should sell the second article at Rs.

2,220.


Ans:55)(d)

Explanation: Speed of first train = 80 km/h. Speed of second train = 120 km/h

As both trains travel in the same direction,

their relative speed equals to the difference of

two speeds.

Relative speed = (120 – 80) = 40 km/h As first train leaveshalf hour before the

second, hence in half an hour, it will cover 40

km as it moves 80 km in 1 hour.

Time taken by the second train to gain 40 km

= 40

40

= 1 hour

Actual distance covered by 2nd train in 1 hour = 1 × 120 = 120 km

Thus, they will meet each other at the

distance of 120 km from Delhi.


Ans:56)(d) Explanation: Total number of ways of filling

the 6 bottles numbered as (1,2,3,4,5 and 6)

with either water or milk = 26 = 64 ways.

Two adjacent bottles with milk can be

obtained in 5 ways, i.e. (1,2), (2,3), (3,4), (4,5) and (5,6).

Three adjacent bottles with milk can be

obtained in 4 ways, i.e. (1,2,3), (2,3,4), (3,4,5)

and (4,5,6).

Four adjacent bottles with milk can be

obtained in 3 ways, i.e. (1,2,3,4), (2,3,4,5) and (3,4,5,6).

Five adjacent bottles with milk can be

obtained in 2 ways, i.e. (1,2,3,4,5) and

(2,3,4,5,6).

Six adjacent bottles with milk can be got in only 1 way (1,2,3,4,5,6).

So, the total number of ways of filling the

bottles such that adjacent bottles have milk =

(5 + 4 + 3 + 2 + 1) = 15.

Hence, the number of ways of filling up the bottles such that no two adjacent bottles have

milk = 64 – 15 = 49.


Ans:57)(c) Explanation: The number of students

interested in mathematics, i.e. n(M) = 15

The number of student interested in English,

i.e. n (E) = 21

The number of student interest in reasoning

i.e. n(R) = 27 The number of student interest in

mathematics and English i.e. n(M E) = 8

The number of students interested in

mathematics and reasoning, i.e. n (M R) =

12 The number of students interested in

reasoning and English, i.e. n (R E) = 17

The number of students interested in all the

three subjects, i.e. n (P M C) =5

From this, we can feel the remaining places

as :

Thus, the students who are interested in

reasoning or mathematics or Enligsh are

0+3+5+7+1+12+3=31.


Ans:58)(c)

Explanation: The students came to the

institute to attend a lecture at 12:15 pm

As the students came 25 minutes before the

teacher, the teacher must have arrived at

12:40 pm. Now, the teacher was late to the class by 30

minutes.

Correct class timing = 12:40 – 30 = 12:10

pm.


Explanation for Questions (59 to 60): Let

us analyze the given statements one by one

and draw the family tree accordingly.


Below are the symbols for representing the relationship.

Statement 1: Anil is the son of Neha, who is

mother of Minal

Statement 2: Shreya is the daughter of

Minal.

Statement 3: Amar, who is the father of

Suman, is married to Tina, who is the sister

of Anil

Statement 4: Suman is the brother of Rekha.

Ans:59)(c)

Explanation: Clearly, Suman is the cousin of

Minal’s daughter.

Ans:60)(b) Explanation: Clearly, Amar is the brother-in-

law of Anil.

Ans:61)(b)

Explanation: Five years ago, the average age of the four students of the class = 45 years.

So, the present average age of the four

students of the class = 45 + 5 = 50 years

Sum of present ages of four students = 50 × 4

= 200 years

Now, a new student joins the class and average age increases by 5 years.

New averages age of five students = 55 years

Now, according to the question,

Average age of five students =

5

studentnewofagestudentsfourofagepresentofSum

Putting the given values we get,

5

studentnewtheofAge20055

Age of the new student = 55 × 5 – 200 =75

years


Ans:62)(d)

Explanation: Let Amit, Mukund and Dhayani

can type x, y and z page respectively in one

hour. Therefore they together can type 4(x + y + z) pages in four hours.

It is given that together they can type 192

pages in four hours.

According to the question we get,

4 (x + y + z) = 192

Or x + y + z = 48 (i) Also it is known that Dhayani can type as

many pages more than Mukund as Mukund

can type more than Amit.

So, z – y = y – x

Or 2y = x + z (ii) From equation (i) and (ii), we get

3y = 48

Or y = 16

From equation (ii),

x + z = 32 (iii)

Further, it is given that during a period of three hours, Dhayani can type as many pages

as Amit can type in five hours.

So, 5x = 3z (iv)

From equation (iii) and (iv), we get: 32zz

5

3

Or z = 20

Putting the value of y and z in equation (i), we

get x = 12.

X = 12, y = 16, z = 20

Hence, Amit, Mukund and Dhayani type 12, 16 and 20 pages, respectively in per hour.


Ans:63)(c) Explanation: Let us assume that the rear

wheels of the wagon have made x revolutions.

Then, front wheels of the wagon have made

(20 + x) revolutions.

Circumference of the front wheel of the wagon

= 2 ft. Distance travelled by the front wheel in (20 +

x) revolutions = 2𝜋 (20+x) feet (i)

Circumference of the rear wheel of the wagon

= 3𝜋 ft.

Distance travelled by the rear wheel in x

revolutions = 3𝜋 x (ii)

As the distance travelled by the front and the

rear wheels of the wagon is equal, thus by

equating (i) and (ii) we get,

3 𝜋x = 2𝜋 (20 + x)

Or 3𝜋 x = 40 + 2𝜋 x

Or 𝜋x = 40

Or x = 40

The distance travelled by the wagon = 3 x = 3

× 𝜋 × 40 = 120𝜋 feet.


Ans:64)(b)

Explanation: The interest paid by the company grew at the same pace for the year

2002.

The interest is increasing by Rs. 2 lakhs every

year.

So, the interest paid by the company in 2002

= 29 + 2 = Rs. 31 lakhs. Total interest paid for the period 1998 – 2002

= 23 + 25 + 27 + 29 + 31 = Rs 135 lakhs.

Average = 5

135

= Rs. 27 lakhs.

Alternatively, the interest paid per year forms

an AP (23, 25, 27, 29 31), with a common

difference of 2. The average of the AP will be equal to its

middle term = Rs. 27 lakhs.

Rs. 27 lakh interest is paid in the year 2000.


Ans:65)(a)

Explanation: Total expenses in the year 1999

= 347 + 120 + 25 + 108 = Rs. 600 lakh.

Expense in fuel = Rs. 120 lakh.

Expense in fuel as a percentage of the total

expenses = (Expenses in fuel/total expenses)

× 100 100

600

120

= 20%


Ans:66)(a) Explanation: statement 3 means that pond is

either equally deep to sea is less deep. River

is deeper than pond is known from statement

1. So, both sea and river can be deeper than

pond but the relation between them can’t be

known. So, option (d) can’t be concluded.

Lake is deeper than river and so seas can’t be as deep as both of them. As, the order of

depth of seas cannot be determined with

respect to lake and river, so, option (b) also

can’t be concluded. Since, pond is either

equally deep to sea or is less deep, it can’t be concluded which of them is least deep. So,

option (c) also can’t be concluded. Since, lake

is deeper than river and river is deeper than

pond, lake is deeper than pond. So, option (a)

is correct.

Ans:67)(a)

Explanation: Let the ages of Amar and

Norman be 4x years and 3x years

respectively.

Amar’s age after 6 years = 4x + 6 = 26 years Or x = 5 years

Norman’s present age = 3x = 3 × 5 = 15 years


Ans:68)(a)

Explanation: Let us analyze the given statements one by one.

In terms of scores, we have : V > P, P > Q i.e.

V > P > Q.

If R scores the highest, we have R > …. > T,

If S scores the highest, we have S > …. > Q or S > …. > U.

If V ranks fifth, P and Q coming after it will

occupy sixth and seventh places respectively

i.e. Q ranks least. So, S will score the highest.

Ans:69)(b) Explanation: Diagram given below shows the

path traversed by Sachin Pahuja.

Let A be the starting point.

Step 1. From A Sachin rode his bicycle

northward. Step 2. From B he turned left and rode 1 km

i.e. upto C BC = 1 km.

Step 3. Finally he turned left and rode 2 km

i.e. upto D CD = 2 km.

Clearly, the boy rode 2 km northward.


Ans:70)(b) Explanation: The passage discusses how

voting on policies at regular intervals will

would learn how terribly difficult politics

actually is. And thus, make people think

before blaming politicians. Hence, Option (b)

is the correct answer. Option (a) and Option


(c) say the just opposite and therefore are incorrect.

Option (d) is incorrect because character and

tendencies of politicians to transparent

government functioning is not discussed in

the passage.

Ans:71)(c)

Explanation: The passage explains how

Russia has a system of personalized power

how it is able to survive that way.

Thus, option (c) is the correct answer. Option (a) is incorrect because the personality

cult in Russia as biggest threat to West is not

discussed in the passage.

Option (b) is incorrect because from the facts

available in the passage it cannot be concluded if Russian democratic system is

more institutionalized or not. Option (d) is

also incorrect because balance of power is not

discussed in the passage. Thus, statements is

far fetched.

Ans:72)(a)

Explanation: The passage discusses the

refugee problem and conflicts in Africa. By

comparing it with Europe it also highlights

how the issue is almost ignored even though the destruction level is that of world war.

Thus, option (a) is the correct answer.

Option (b) is wrong. Whether Africans are

considered secondary citizens or not is not

discussed in the passage. Option (c) is

incorrect because the conflicts can’t be regarded as world war. Option (d) is incorrect

because from the facts available in the

passage it can’t be concluded whether the

number of refugee in Africa is unprecedented

in human history or not.

Ans:73)(d)

Explanation: The passage gives examples to

show how irrational it is to act like an

executioner. This, option (d) is correct answer

which says that the principle of vengeance cannot be sustained rationally.

Option (a) is incorrect because relation

between health and anger is not discussed in

the passage. Option (b) is also incorrect. It is

nowhere mentioned or proved that most religions denounce the philosophy of

vengeance. It is just mentioned that god will

punish the assailant. Option (c) is also

incorrect. Whether forgiveness is the most

important virtue or not is not discussed in

the passage.

Ans:74)(b)

Explanation: The passage discusses that we

like to fantasize our partner to be like

superstars. Thus, option (b) is correct which

mentions that we are not willing to accept the imperfections in our partner.

Option (a) is incorrect. Nothing is discussed

about romance in daylight. Option (c) is also

incorrect. The expectations in a partner vary

from person to person and it is not always the good looks. Option (d) is also incorrect. It

can’t be said from the facts available in the

passage that many of us suffer from night

blindness or not.

Ans:75)(b) Explanation: The passage does not mention

colonialism and imperialism or its link with

nationalism. Thus, option (a) is incorrect.

The passage mentions “That we all live in

nation states and that we all have a nationality or a national citizenship may

appear natural to us today. Before the First

World War passports were not widely used for

international travel”. It points to the

assumption that societies were not always

organised on the lines of nation states. So, option (b) is correct.

Though, the passage mentions that passports

were not widely used earlier, it was a cause of

nation states cannot be assumed from the

passage. So, option (c) is incorrect .The passage explicitly mentions that “Nation

states are closely associated with the rise of

nationalism” but it can’t be assumed if nation

states triggered the rise of nationalism or not.

Ans:76)(c) Explanation: Let us assume the speed of

motorcycle to be x kmph

Distance covered by Ajay in 3 hrs. and 30

minutes = distance covered by Rajesh in 2

hrs. and 10 minutes.

Or

60

102X

2

712

Or

6

12X76

Or

6

13X76

Or 13

676X

Or 13

252X

= 13

519

km/hr

Ans:77)(c) Explanation: Let the rate of flow of the

stream be x kmph

Downstream speed of the motorboat = (x +

10) km/h

Upstream speed of the motorboat = (10 - x) km/h

Total time taken on downstream journey and

upstream journey of 100 km each = 25 hrs.


Or 25

x–10

100

x10

100

Or

25x–10

1

x10

1100

Or

25x–100

x10x–10100

2

Or

1x–100

204

2

Or 80 = 100 – x2

Or x2 = 20

So, x = 4.47 km/hr Hence, option (c) is the correct answer.

Ans:78)(c)

Explanation: Let the starting point be A.

Then his movement may be depicted as below:

Bear Grylls moves from A to B, then turning left he travels from B to C and finally back to

A. Hence, as seen in diagram, when the

direction CA corresponds to South – West,

the AB corresponds to East.

Ans:79)(b)

Explanation: It’s evident that the 3 columns

contain the Pythagoras triplets in ascending

order.

So, 32 + 42 = 52; 52 + 122 = 132

So, (72 + 242) = 252

The missing number is 25)247( 22

.

Ans:80)(d)

Explanation: Option (a) is incorrect as people

getting what they deserve and people getting what they demand are different things.

Option (b) is incorrect as words like tend to

and typically suggests that the given

statement is true in general but is not true in

every case. Thus people do not always have to

protest for anything they want. Option (c) is speculative and outside the

meaning of the sentence. Also, demands

made by people in a democracy may not be

through protests. Thus option (c) is also

wrong. Thus, correct option is (d).

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