Question

You went shopping and found a pair of shoes that were $45.00 on sale for $27.50. what was the percent of decrease of the shoes? your answer should go 1 decimal place)

Answer 1

Percent decrease = (original number - new number) / original number....* 100
                             = (45 - 27.5) / 45.....* 100
                             = 17.5 / 45....* 100
                             = 0.3888 * 100 
                             = 38.9 % decrease <== thats rounded