Question

the driving distance from chicago to san francisco is 2,142 miles. the hathaway family left chicago on monday morning, december 6. they averaged 50 miles an hour and drove 6 hours each day. the hathaway's car used 119 gallons of gasoline on the trip. how many miles per gallon did the car get?

Answer 1

Miles driven in 119 gallons = 2142 miles
Miles driven in 1 gallon      = (2142/119) * 1
                                           = 18 miles