Question

On a trip across the country Joe used 20 gallons of gas to go 300 miles. At this rate, how much gas must he use to go 3600 miles?

HELP

Answer 1

240 gallons

Explanation:

Let's set up an ratio where g = gallons and m = miles:

20g = 300m

We need the right side of that to be 3600, so multiply both sides by 12:

12(20g) = 12(300m)

Answer: 240 gallons for 3600 miles