Answer:
38 miles
Explanation:
Given : Jodi car used 12 gallons of gas to travel 456 miles.
To Find: how many miles did her car travel per gallon of gas?
Solution:
No. of miles covered in 12 gallons of gas = 456
So, No. of miles covered in 1 gallon of gas =

=

So, No. of miles covered in 1 gallon of gas is 38 miles
Hence Her car travel 38 miles per gallon of gas