Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized for You

we will pick new questions that match your level based on your Timer History

Track Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

Car X gets 25 percent more miles per gallon of gasoline than [#permalink]

Show Tags

05 Sep 2005, 15:55

00:00

A

B

C

D

E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct
0% (00:00) wrong based on 0 sessions

HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Car X gets 25 percent more miles per gallon of gasoline than Car Y does. However, Car X requires premium gasoline that costs 10 percent more than regular gasoline used by Car Y. If the two cars are driven equal distances, what percent less than the money spent on gasoline for Car Y is the money spent on gasoline for Car X?

Plugging easy numbers (doesn't matter if they're realistic or not):

Car Y gets 100 miles per gallon. Car X gets 25% more or 125 miles per gallon. A gallon costs $1.00. So if they both drive 100 miles, car Y spends $1.00 and car X spends (100/125) or 0.8 x ($1.00x1.1) = 0.8 x $1.10 = $0.88.

$0.88 is 12% less than $1.00. So the answer would be D) 12%.

Anyway I guess I wasn't thinking too hard about the numbers themselves because I think of gas prices in litres, not gallons, and consumption in kilometers, not miles. The theory's the same though.

You can also have x use 8 gallons and y use 10 gallons 25% difference. Then have gas cost $10 so x spens $88 and y spends $100
The difference is $12 so 12%