Question

a music store is advertising 25% off sale on all new releases find the discount and the sale price of a newly released cd that regularly sells for $12.50

Answer 1

discount value = discount percent times the regular price
sale price = regular price - discount value

Answer 2

To find the discount, you can use a proportion.
The original price is 100% of the price. You want to find how much is 25% of the price.
Think of the proportion like this: if $12.50 is 100% then how much money (x) is 25%?
Here's the proportion:
\[\frac{ 12.50 }{ 100 } = \frac{ x }{ 25 }\]
Solve for x to get the discount. You may use cross multiplication for that.
Once you know the discount, subtract it from the original price.

Answer 3

25% of $12.50 is 3.125