a store has a sale for 25% off. You decide to buy a sweater that usually cost $30.
(a) How much money will you save?
(b) How much money will you spend on the sweater?
(a) The amount of money you will save can be calculated by multiplying the original price of the sweater ($30) by the discount percentage (25% or 0.25):
Saving = $30 * 0.25 = $7.50
(b) The amount of money you will spend on the sweater after applying the discount can be calculated by subtracting the saving from the original price:
Amount spent = $30 - $7.50 = $22.50