• e-gmat Exclusive Offer
    Get 300+ Practice Questions
    25 Video lessons and 6 Webinars for FREE

    Available with Beat the GMAT members only code

    MORE DETAILS
    e-gmat Exclusive Offer
  • EMPOWERgmat Slider
    1 Hour Free
    BEAT THE GMAT EXCLUSIVE

    Available with Beat the GMAT members only code

    MORE DETAILS
    EMPOWERgmat Slider
  • Veritas Prep
    Free Veritas GMAT Class
    Experience Lesson 1 Live Free

    Available with Beat the GMAT members only code

    MORE DETAILS
    Veritas Prep
  • PrepScholar GMAT
    5 Day FREE Trial
    Study Smarter, Not Harder

    Available with Beat the GMAT members only code

    MORE DETAILS
    PrepScholar GMAT
  • Magoosh
    Magoosh
    Study with Magoosh GMAT prep

    Available with Beat the GMAT members only code

    MORE DETAILS
    Magoosh
  • Target Test Prep
    5-Day Free Trial
    5-day free, full-access trial TTP Quant

    Available with Beat the GMAT members only code

    MORE DETAILS
    Target Test Prep
  • Economist Test Prep
    Free Trial & Practice Exam
    BEAT THE GMAT EXCLUSIVE

    Available with Beat the GMAT members only code

    MORE DETAILS
    Economist Test Prep
  • The Princeton Review
    FREE GMAT Exam
    Know how you'd score today for $0

    Available with Beat the GMAT members only code

    MORE DETAILS
    The Princeton Review
  • Varsity Tutors
    Award-winning private GMAT tutoring
    Register now and save up to $200

    Available with Beat the GMAT members only code

    MORE DETAILS
    Varsity Tutors
  • Kaplan Test Prep
    Free Practice Test & Review
    How would you score if you took the GMAT

    Available with Beat the GMAT members only code

    MORE DETAILS
    Kaplan Test Prep

Sets

This topic has 2 member replies
rajs.kumar Senior | Next Rank: 100 Posts Default Avatar
Joined
09 Jun 2006
Posted:
87 messages
Upvotes:
2

Sets

Post Thu Oct 26, 2006 2:35 am
One night a certain motel rented 3/4 of its rooms, including 2/3 of its air-conditioned rooms. If 3/5 of its rooms were air-conditioned, what percent of the rooms that were not rented were air-conditioned.

A. 20%
B. 331/3%
C. 35%
D. 40%
E. 80%

  • +1 Upvote Post
  • Quote
  • Flag
ajith Legendary Member
Joined
21 Sep 2006
Posted:
1275 messages
Followed by:
2 members
Upvotes:
125
Test Date:
April 2010
Target GMAT Score:
740
Facebook Logo
Post Thu Oct 26, 2006 2:59 am
((1-2/3)*3/5)/(1-3/4)

=(1/5)/(1/4)=(4/5)=80%

So I go for E

  • +1 Upvote Post
  • Quote
  • Flag
countingdolls Junior | Next Rank: 30 Posts Default Avatar
Joined
02 Oct 2006
Posted:
13 messages
Post Thu Oct 26, 2006 7:31 am
80% it is.

In case you find it difficult to use the fractions, assume the total no of rooms to be a value, say 100........problem becomes easier

  • +1 Upvote Post
  • Quote
  • Flag

Top First Responders*

1 GMATGuruNY 96 first replies
2 Brent@GMATPrepNow 62 first replies
3 Rich.C@EMPOWERgma... 42 first replies
4 Jay@ManhattanReview 24 first replies
5 Sionainn@Princeto... 16 first replies
* Only counts replies to topics started in last 30 days
See More Top Beat The GMAT Members

Most Active Experts

1 image description Brent@GMATPrepNow

GMAT Prep Now Teacher

138 posts
2 image description GMATGuruNY

The Princeton Review Teacher

136 posts
3 image description Jeff@TargetTestPrep

Target Test Prep

102 posts
4 image description Scott@TargetTestPrep

Target Test Prep

99 posts
5 image description Rich.C@EMPOWERgma...

EMPOWERgmat

86 posts
See More Top Beat The GMAT Experts