economics of driving

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.

With gas costing $4 per gallon:

Cost per mile of 30 MPG car = $4/30 miles =~ 13.3 cents per
mile
Cost per mile of 25 MPG car = $4/25 miles = 16.0 cents per
mile

Per mile savings of 30 MPG car =~ 2.7 cents per mile

> 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.
>
>
>

> wrote in message
...
> 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've gotta be a blonde!!

On May 14, 2:54 pm, "<username>" <user@name> wrote:
> > wrote in message
>
> ...
>
> > 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've gotta be a blonde!!

Yes I am!

The other day I was designing a distillation column for an industrial
company. According to my computation, the height of the column should
be 6 miles...

On May 14, 12:35 pm, 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.

On Wed, 14 May 2008 11:57:03 -0700 (PDT),
wrote:

>On May 14, 2:54 pm, "<username>" <user@name> wrote:
>> > wrote in message
>>
>> ...
>>
>> > 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've gotta be a blonde!!
>
>Yes I am!
>
>The other day I was designing a distillation column for an industrial
>company. According to my computation, the height of the column should
>be 6 miles...

I think you're management material.