Question

A holding tank containing 3000 gallons of oil is been at the rate of 130 gallon per hour of six hours and then filled at the rate of 100 gallons per hour for three hours how much oil is in the tank now

Answer 1

2520 gallons

Explanation:

3000 gallons -780 gallons drained over 6 hours then add 300 gallons over three hours = 2520 gallons