determine the time the barrel was empty. if after 30 seconds there are 14 gallons of water left and after one minute there are 9 gallons left.

Answer 1

https://www.jiskha.com/display.cgi?id=1512227767

Answer 2

i am getting 35 min and 7 sec. is that correct?

Answer 3

No.

5 gallons in 30 seconds
1 gallon in 6 seconds

9 gallons in 6 * 9 = 54 seconds