Question

Robin's car gets 30 miles per gallon and at present gas costs $3.71 per gallon.Robin is planning a vacation which is 640 miles away. How much money will Robin have to budget for the gas used on this round trip? Ignore any side travel that Robin might do.This trip will cost how much?

Answer 1

One way trip distance = 640 miles

Round trip distance = 640 x 2 = 1280 miles

The mileage of Robin's car = 30 miles per gallon

To cover 1280 miles, Robin will require:

`(1280)/(30)=42(2)/(3)\text{gallons}`

Since each gallon costs $3.71, 42 and 2/3rd gallon will cost:

`42(2)/(3)*3.71=\$158.29`

The total cost of the trip - $158.29

Answer$158.29