6th Grade Math Textbook, Progress

12-7

Find the discount and sale price.

1. 15% discount of a $13 CD at 2. 20% discount of a $500
   Posio’s Music World entertainment system at LP
   Electronics

A discount is a reduction of the list, or regular,

price of an item. The rate of discount is given

as a percent.

The sale price is the difference between

the list price and the discount.

Some CDs at Posio’s Music World

regularly sell for $15 each. This week they

are being sold at a 15% discount. What

is the discount? What is the sale price?

Discount and Sale Price

sale price $15

discount

$0

0% 15% 100%

d

• Discount
  Rate of DiscountList Price
  D
  RLP


• Sale Price
  List PriceDiscount
  SP
  LPD

To find the discount, D, write an equation

and solve for the discount.

D
15% of $15.00

D
0.15$15.00

D
$2.25

The discount on each CD is $2.25.

To find the sale price, SP, write an equation

and solve for the sale price.

SP
$15.00$2.25

SP
$12.75

The sale price of each CD is $12.75.

426 Chapter 12 1.4

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