A store has a sale for 10% off. You decide to buy a $17 DVD.
(a) How much money will you save?
(b) How much money will you spend on the DVD?
(a) To calculate the amount of money you will save, you need to find 10% of $17.
10% of $17 = 0.10 * $17 = $1.70
You will save $1.70.
(b) To find out how much money you will spend on the DVD, you need to subtract the savings from the original price.
$17 - $1.70 = $15.30
You will spend $15.30 on the DVD.