Question

A puddle originally contained 7.5 gallons of water. After a hot day, only 6 gallons of water remain. What is the percent decrease? Enter your answer in the box.

Answer 1

20%

Explanation:

First, find how much decrease there was: 7.5 - 6 = 1.5

This means the decrease was 1.5/7.5. To convert this to percentage, divide 1.5 by 7.5:

1.5 ÷ 7.5 = 0.20

0.20 = 20% decrease

Answer 2

20 percent

Explanation:

7.5 gallons - 6 gallons = 1.5 gallons

`(1.5)/(7.5)` × 100 = 0.2 × 100 = 20 %