To find gas mileage you must find the miles per gallon of Teresa’s car. Mile per gallon can also be written as miles/gal and this expression will help us in the next step.
Now that we know why gas mileage is, you can plus in the values given in the problem right on into your expression.
This leaves you with:
473.3/13.6
Now, perform the division.
This results in:
34.8014
So, Teresa’s gas mileage is appropriately 34-35 miles per gallon.
I hope this helps! :)
