Discount, Sale Price

Discount- how much money is SAVED from original price

Original Price- the cost of the item before the discount is taken off

Sale Price- the price after the discount is takenAlso referred to the discount price

A shirt is priced at 49.99 and on sale for 20% off. What is the sale price?

• 49.99 Original priceSteps1.List original price and

label it2. change % to a decimal

and multiply by original price to get discount

3. subtract discount from original price to get sale price

X .20

9.9980

49.99 original

- 9.99 discount

40.00 sale price

I want to buy a pair of CLEAR shoes for 79.99 and it is on sale for 25% off. Find the discount and sale price

• 79.99 original priceX .25

19.9975

79.99 original price-19.99 discount

60.00 sale price

I want to buy a shirt for 29.99 and pants for 39.99. Both are on sale for 33% off. Find the discount and sale price

• There are 2 ways to do this• do each item separately• add both items then take discount

29.99 shirt+39.99 pants69.98 X .3323.0934

69.98 sale price-23.09 discount46.89 sale price

We are buying an ipod 129.99 on sale for 20% off. We also buy the skin for it 19.99 on sale for 30% off. What is the sale price that I pay?

• This one has to be done separately• Think that it should look like a receipt

from any store

129.99 origx.20

25.9980 discount

19.99 orig

x.30

5.9970 discount129.99 orig- 25.99 dis

104.00 sale price

19.99 orig- 5.99 dis14.00 sp+ 118.00 sp

Now let’s talk about tax

• The type of tax we are going to use is called sales tax

• It is the amount of money ADDED to the sale price

• It is usually a different rate in every city

A jacket is 99.99 and on sale at 25% off. The tax is 8%. Find the discount, sale price and the total

99.99 original pricex .25 24.9975 discount 99.99 original price-24.99 discount75.00 sale priceX .086.00 tax75.00 sale price+6.00 tax81.00 total

To do tax1.Change % to a

decimal 2.Multiply to sale price

to get tax3.Add tax to sale price to get total

This is also called subtotal which means the total before tax

A dvd player is 49.99 and on sale for 25%off. A home theater system is 399.99 and also on sale for 30% off. Tax is what you payin your area. What is the discount, sale price,tax, and total for this purchase?

49.99 original pricex .2512.4975 discount

49.99 original-12.49 discount37.50 sale price

399.99 original x .30

119.9997 discount

399.99 original- 119.99 discount280.00 sale price

317.50 subtotal X .0825 tax rate

23.10 tax

317.50 subtotal+23.10 tax

340.60 total

280.00 sale price of home theater system+37.50 sale price of dvd player

317.50 subtotal

For this problem wedid 7 different problemsto get this answer

SIMPLE INTEREST

• The amount of EXTRA money that someone charges or receives

• Used in the real world talking about loans, credit cards or savings accounts

Joe wants to buy a television. The tv costs$900. Since he does not have the cash to buy it he uses a credit card. The card charges 13% interest. How much will Joe have to pay total for the television?

FormulaI = PRT

• Interest= principal times rate times the time

Principal- amount of $ either borrowed or saved

Rate- the interest rate is the %

Joe wants to buy a television. The tv costs $900. Since he does not have the cash to buy it he uses a credit card. The card charges 13% interest for 1 year. How much will Joe have to pay total for the television?

Write the formula then replace the letters with numbers and solve

I = PRT

I bought furniture for 2800, 1000 for the chair and 600 for the ottoman. They have a special interest for 2 years at 3%.What is the total someone would pay?

Write formula…… I = PRTReplace the letters with numbers and solve

I = 4400(3%)(2)

I= 4400(.03)(2)

I= 8800(.03)

I= 264

to find total we add interestTo the principal

Total = I + P

Total = 264+4400

Total = 4664

COMMISSION• used in the real world in sales when a

salesperson gets a percentage of what they sell

• the more they sell the more they make• Examples of people who work on

commission are ….• Selling cars, houses, jewelry and other

expensive items

A salesman sells a camcorder for $999and gets 8% commission. How much does he make?

To do1.Price times commission % to get commission

999 .087992 .

QUIZ• 1. A jacket is 129.99 and on sale for 20% off. Tax

is 8%. What is the total?

• 2. What is the subtotal?

• 3. Find the total for a tv for 899.99 and on sale for 20% off and a dvd for 99.99 with 25% off. Tax is 7%

• 4. A piece of wood is 12 ½ ft long. How many ¾ pieces are cut from it?

• 5. A shirt for 39.99 and on sale for 40% off, a belt for 29.99 and on sale for 25% off and a pair of clear shoes for 19.99 for 30% off. What is the total price?

112.32

Price before the tax

850.65

3

21616 2/3

60.50