Jodi's car used 12 gallons of gas to travel 456 miles. How many miles did her car travel per gallon of gas?

38 miles. Jodi's car drove 38 miles per gallon of gas.

To start, let's determine what we're looking for: miles traveled PER gallon of gas. We can replace "per" and say: miles traveled / gallons of gas.

If we fill in our new equation "miles / gallon" with the numbers given, we have: 456 miles / 12 gallons.

Solving this equation we get 38 miles / gallon.

38 miles per gallon