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Aptitude :: Problems on Trains

@ : Home > Aptitude > Problems on Trains > General Questions

Overview

Important Formulas

Exercise

General Questions

Data Sufficiency 1

Data Sufficiency 2

Data Sufficiency 3

"You cannot shake hands with a clenched fist."

11. A 270 metres long train running at the speed of 120 kmph crosses another train

running in opposite direction at the speed of 80 kmph in 9 seconds. What is the

length of the other train?

A.230 m B.240 m

C.260 m D.320 m

E.None of these

Answer & Explanation

Answer: Option A

Explanation:

Relative speed = (120 + 80) km/hr

= 200 x5

m/sec18

=500

m/sec.9

Let the length of the other train be x metres.

ems on Trains - Aptitude Questions and Answers Page 3 http://www.indiabix.com/aptitude/problems-on-train

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Then,x + 270

=500

9 9

x + 270 = 500

x = 230.

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12. A goods train runs at the speed of 72 kmph and crosses a 250 m long platform in 26

seconds. What is the length of the goods train?

A.230 m B.240 mC.260 m D.270 m


Answer: Option D

Explanation:

Speed = 72 x5

m/sec= 20 m/sec.

18

Time = 26 sec.

Let the length of the train be x metres.

Then,x

+ 250= 2026

x + 250 = 520

x = 270.


13. Two trains, each 100 m long, moving in opposite directions, cross each other in 8

seconds. If one is moving twice as fast the other, then the speed of the faster train is:

A.30 km/hr B.45 km/hr

C.60 km/hr D.75 km/hr


Answer: Option C

Explanation:

Let the speed of the slower train be x m/sec.

Then, speed of the faster train = 2x m/sec.

Relative speed = (x + 2x) m/sec = 3x m/sec.

(100 + 100)= 3x

8

24x = 200

x =25

.

3

So, speed of the faster train =50

m/sec3

=50

x18

km/hr3 5

= 60 km/hr.


14. Two trains 140 m and 160 m long run at the speed of 60 km/hr and 40 km/hr

respectively in opposite directions on parallel tracks. The time (in seconds) which


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they take to cross each other, is:

A.9 B.9.6

C.10 D.10.8


Answer: Option D

Explanation:

Relative speed = (60 + 40) km/hr = 100 x5

m/sec=

250

m/sec.18 9

Distance covered in crossing each other = (140 + 160) m = 300 m.

Required time = 300 x9

sec=

54sec = 10.8 sec.

250 5


15. A train 110 metres long is running with a speed of 60 kmph. In what time will it pass

a man who is running at 6 kmph in the direction opposite to that in which the train is

going?

A.5 sec B.6 sec

C.7 sec D.10 sec


Answer: Option B

Explanation:

Speed of train relative to man = (60 + 6) km/hr = 66 km/hr.

= 66 x5

m/sec18

=55

m/sec.3

Time taken to pass the man = 110 x3

sec = 6 sec.55


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Read more:

Problems on Trains - Important Formulas

Problems on Trains - Data Sufficiency 1

Problems on Trains - Data Sufficiency 2Problems on Trains - Data Sufficiency 3

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