Question

You and three friends are driving from Philadelphia to St. Louis. The trip is approximately 885 miles. Your friends agree to pay for the gas since you are driving. In order to get an estimate of how much each person would pay, they find that the average cost of gasoline is $3.88 per gallon. Your car gets an average of 28 miles to the gallon.

To the nearest dollar, how much will the gas cost per person for the trip?

$45.00

$41.00

$32.00

$31.00

Answer 1

$41.00

Explanation:

To find the cost, multiply miles by the price divided by the mileage.

`(885\,mi)(\left((\$3.88)/(gal)\right))/(\left((28\,mi)/(gal)\right))=(\$3.88\cdot 885)/(28)\\\\=\$122.636\qquad\text{divided among 3 friends}`

That's about $122.636/3 ≈ $40.88 per friend, which rounds to $41.