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 350,000 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:

A parking garage has places for a certain number of cars. If [#permalink]
17 Sep 2010, 00:05

2

This post was BOOKMARKED

00:00

A

B

C

D

E

Difficulty:

55% (hard)

Question Stats:

49% (01:51) correct
51% (00:51) wrong based on 303 sessions

A parking garage has places for a certain number of cars. If \frac{1}{5} of the places are left empty, and \frac{2}{5} of the places are used by compact cars, non-compact cars take up what fraction of the filled spaces in the garage?

A. \frac{1}{3} B. \frac{2}{5} C. \frac{1}{2} D. \frac{3}{5} E. \frac{4}{5}

A parking garage has places for a certain number of cars. If \frac{1}{5} of the places are left empty, and \frac{2}{5} of the places are used by compact cars, non-compact cars take up what fraction of the filled spaces in the garage?

A. \frac{1}{3} B. \frac{2}{5} C. \frac{1}{2} D. \frac{3}{5} E. \frac{4}{5}

As \frac{1}{5} of the places are left empty then \frac{4}{5} of the places are filled --> \frac{2}{5} of the places are used by compact cars, so \frac{4}{5}-\frac{2}{5}=\frac{2}{5} are used by non-compact cars, which means that non-compact cars take \frac{\frac{2}{5}}{\frac{4}{5}}=\frac{1}{2} of the filled spaces in the garage.

Or just pick some smart number for total places, let it be 5, then 1 place is left empty, so 4 places are used --> 2 places are used by compact cars and 2 by non-compact cars, so non-compact cars take \frac{2}{4}=\frac{1}{2} of the filled spaces in the garage.

A parking garage has places for a certain number of cars. If \frac{1}{5} of the places are left empty, and \frac{2}{5} of the places are used by compact cars, non-compact cars take up what fraction of the filled spaces in the garage?

A. \frac{1}{3} B. \frac{2}{5} C. \frac{1}{2} D. \frac{3}{5} E. \frac{4}{5}

Empty = \frac{1}{5}

Compact cars = \frac{2}{5}

Non compact = 1- \frac{1}{5} -\frac{2}{5} = \frac{2}{5}

Total filled spaces = \frac{2}{5} + \frac{2}{5} = \frac{4}{5}

fraction of the filled spaces in the garage by non compact cars = \frac{2}{5}/\frac{4}{5}

Re: Parking garage [#permalink]
12 Nov 2012, 11:44

I substituted numbers- 100 total car spots. 1/5 or 20 are empty. 80 numbers are used spots for both compact and non-compact cars. 2/5 are used by compact cars, which means 3/5 are used by non-compact cars. 3/5 of 80 is 48. 48/80 is not 1/2.... where did i go wrong?? _________________

Re: Parking garage [#permalink]
13 Nov 2012, 02:05

1

This post received KUDOS

Expert's post

JJ2014 wrote:

I substituted numbers- 100 total car spots. 1/5 or 20 are empty. 80 numbers are used spots for both compact and non-compact cars. 2/5 are used by compact cars, which means 3/5 are used by non-compact cars. 3/5 of 80 is 48. 48/80 is not 1/2.... where did i go wrong??

The red part is not correct. Total of 100 spots: 20 are empty; 80 are used; 40 are used by compact cars; 80-40=40 are used for non-compact cars.

So non-compact cars take 40/80=1/2 of the filled spaces in the garage.

Re: A parking garage has places for a certain number of cars. If [#permalink]
23 Aug 2014, 06:26

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email. _________________

When I wrote this original post exactly nine months ago I had no idea how things would work out and more than a little self-doubt. I was still depressed and...

YESSSSS!!!! Yesterday Duke beat Gonzaga, 52-66, and qualified for the final four!!! (what we would call semifinals in the rest of the world). For those who don’t...