The amount fuel used to drive 405 miles is 20 gallons.
Determine the amount of fuel (gallon of gas) required to drive 1 mile.
[tex]\frac{20}{405}\text{ gallons}[/tex]
Determine the amount of gas required to drive 243 miles.
[tex]\frac{20}{405}\cdot243=12[/tex]
So 12 gallons of gas is reuired to drive 243 miles.
Answer: 12 gallons
