Question

A swimming pool is drained at the end of each summer. Fifteen gallons of water are removed per minute. How much does the amount of water in the pool change in one hour? (There are 60 minutes in one hour.)

Answer 1

-900

Explanation:

A loss of 15 gallons a minute for 60 minutes would be a total loss of 900 gallons. You represent that as -900 gallons.

Answer 2

15* 60= 900, so the amount of water is decreased by 900 every hour.