Question

A gas tank contains 5.3 gallons. The capacity of the tank is 12.5 gallons. How much will it cost to fill the tank at $1.30 per gallon?

Answer 1

$12.5-5.3=7.2$ (gallons) are needed to fill up to full tank.

For each gallon one needs to pay $$1.30$,

so $7.2*\$1.30=\$9.36$.

Answer: $$9.36$.