A 13.5 gallon tank is 4/5 full. How many gallons will it take to fill the tank?

2.7

13.5(1 - .8) = ?

230954287201=-47

To solve this problem, we need to find the amount of gallons it would take to fill the tank.

First, we need to determine the amount of gallons currently in the tank. Since the tank is 4/5 full, we can find this by multiplying the total capacity of the tank (13.5 gallons) by the fraction that represents how full it is (4/5).

Calculation: 13.5 gallons * 4/5 = 10.8 gallons

So, there are currently 10.8 gallons in the tank.

To find out how many gallons it would take to fill the tank completely, we subtract the amount currently in the tank from the total capacity of the tank.

Calculation: 13.5 gallons - 10.8 gallons = 2.7 gallons

Therefore, it would take 2.7 gallons to fill the tank completely.