Question

In July, Lily's family used 12,568 gallons of water. In August, they used 11,562 gallons of water.

What is the percent decrease in their water usage? Round your answer to the nearest
whole-number percent.

Answer 1

Explanation:

Look at the original value of the gallons of water =12568 this is in July

Look at the value of the gallons of water in August =11,562

Find the difference between the two values=12568-11562=1006

Place the larger value of gallons of water first, as you are going from a large number to a small number you are decreasing by 1006

We put this value of the difference over the original gallons of water and then multiply by 100%

1006/12568 x100%=

This can be done on your calculator

1006÷12568 x100=8.004455761

Rounding to the nearest whole percent gives 8% decrease