# How to find miles per gallon given the following situation?

Fred drives an average of $15,000$ miles per year, and his car gets $20$ miles per gallon of gasoline.

• The average cost of gasoline is $\$3.25 $per gallon. • He buys a new car. In his new car Fred continues to average$15,000$miles per year, and the average cost of gasoline remains the same. Approximately how many more miles per gallon does the new car get of Fred has a savings of$\$650$ per year on gasoline?

So for this this is what I've got: $15000/20=750$ to find the gallons drove and than multiply that by $3.25$ so I would get $750\cdot 3.25=2437.5$ and I subtract that by $650$ because $650$ is saved.

Now I have stuck. after this what do i do?

And sorry for not editing this correctly, I'm using my phone.