Dear Forumers,

Say I can choose between two cars. The gas mileage of the first car is
25. The gas mileage of the second car is 30. Let us say that the cost
of gas is 4$ per gallon.

The difference in gas mileage between the two cars is 5. So the
savings if I choose the leaner car is 4$ per gallon/5miles per
gallon=0.8 $ per mile
Am I right?

I greatly appreciate your help.