My car gets 28miles to the gallon. After filling up the tank I drove 224miles. What fraction of the tank is remaining at that point?

Question

Part A. My gas tank holds 18 gallons of gas, it is 2/5 full. Gas per gallon costs $2.80. How much money will it take to fill my gas tank?(answered)

Answer 1

If the tank is 2/5 full, it will take 3/5 of a tank to fill it.

Amount of gas to buy = (3/5) * 18 = 54/5 gal

Cost of gas = 54/5 * 2.80 = $30.24