First, set up the percent proportion, cross multiply and divide. Finally, subtract the answer you get from the original number. You should get, $1,425.50.
$480 is the price after the discount was added. We can then assume that $480 is 3/4 the price of the original item. To find 1/4, we simply divide by 3, which equals $160. since $160 is one quarter of the price, the original price was $640.
