Question

The gas gauge in a car shows it has 40% of a tank of gas. If the car has about 5 gallons, approximately how many gallons can the tank hold when it is full?

Answer 1

If 40% of a gas tank is equal to 5 gallons then:

0.40x=5

x=5/0.40

x=12.5

And so the tank can hold up to 12.5 gallons.