Question

Car A uses regular gasoline at $1.21 a gallon and gets 19 miles per gallon (mpg) in town. Assume that

you drive 100 miles a week, or 400 miles a month. What is your gas bill each month?

Answer 1

Explanation:

Remark

If you drive 400 miles a month, and you get 19 miles per gallon, then you will need

gallons = miles / miles per gallon

Givens

m = 400

mpg = 19

Cost per gallon = 1.21

Solution

gallons = 400 / 19 = 21.05

You need to buy 21.05 gallons

1 gallon costs 1.21

21.05 gallons cost x Cross multiply

x = 1.21 * 21.05

Answer: x = 25.47 Cost for 1 month's fuel.