Question

I was collected 15.6 L of rainwater last year. This year, she collected 11.4 L. What percent decrease is that? Round your answer to the nearest whole percent.

Answer 1

This is 27% decrease.

Explanation:

The amount of rainwater collected last year was 15.6 L, and this year it was 11.4 L, this means 15.6 L-11.4 L= 4.2 L less water was collected this year than last year.

This 4.2 L is

`(4.2L)/(15.4L)*100`

percent of the amount of water collected last year. Evaluating this we get:

`(4.2L)/(15.4L)*100=0.269*100=26.9%`

Rounding to the nearest percent this is 27%.

Thus, the percent decrease in the amount of rainwater collected is 27%.