Question

The price of the stereo system

decreased from $210 to $126.

What was the percent of decrease?

Answer 1

40%

Explanation:

The amount of decrease is $84, so now all you need to do is convert 84/210 into a percentage. Divide both sides by 2.1 so the denominator is 100 (percent is a ratio with a denominator of 100) and the answer will be 40/100, which is 40%.