On May 14, 12:35 pm, elodie.gill...@gmail.com wrote:
> 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.

You can examine the result of any calculation by seeing how it would
entail.

Let's say you choose the better car then you'll save $0.8 per mile.
And then by driving 30 miles (you'll have to spend $4.0 for this)
you'll save 30 x $0.8 = $24. You'll be $20 richer per 30 mile you
drive.

if you're driving at 60 mph, you're making $40 an hour.. hehe

The saving can only be calculated by comparing cost per mile.