Question

Seven gallons of gas cost $15.89. How much would 10 gallons of gas cost?

Answer 1

In your first sentence, 7p = 26.88 is implied. Now, AN equation to find the price of one gallon--simply solve for p = 26.88/7; p = $3.84 per gallon.

Answer 2

$22.70

Explanation:

First, find out how much 1 gallon costs. To do this, divide 15.89 by 7.

So, one gallon costs 2.27. Then multiply that by 10 to get 22.7.