Sara drives 72 miles on 3.2 gallons of gas. she uses this information to calculate how many miles per gallon she can drive. using this result how many miles can sara drive on 13.3 gallons of gas?

Sara drives 22.5 miles per gallon and 299.25 miles in 13.3 gallons of gas.

Step-by-step explanation:

Sara drives 72 miles on 3.2 gallons of gas and we have to calculate how many miles per gallon she can drive.

By unitary method

∵ 3.2 gallons of gas is used to drive = 72 miles

∴ 1  gallon of gas is used to drive = 72÷3.2 miles

                                                       = 22.5 miles

∴ 13.3 gallons of gas is used to drive = 13.3×22.5 = 299.25 miles

Therefore Sara drives 22.5 miles per gallon of gas and on 13.3 gallons of gas she drives 299.25 miles.