Welcome! Check out our free B-School Guides to learn how you compare with other applicants.
Login or Register
 

OG #120

This topic has 2 expert replies and 1 member reply
Bookmark
Previous Topic Next Topic
fangtray Really wants to Beat The GMAT! Default Avatar
Joined
08 Sep 2011
Posted:
273 messages
Followed by:
3 members
Thanked:
4 times
OG #120 Post Sat Mar 17, 2012 10:42 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    The annual rent collected by a corporation from a certain building was x percent more in 1998 than in 1997 and y percent less in 1999 than in 1998. Was the annual rent collected by the corporation from the building more in 1999 than in 1997?

    1) x>y
    2) xy/100 < x-y

    The hard part of this question is statement #2. What is a good strategy for this question?

    sorry i'm not sure how to add the answer and black it out so i'll write the answer in a few posts.

    Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!

    GMAT/MBA Expert

    Anurag@Gurome GMAT Instructor
    Joined
    02 Apr 2010
    Posted:
    3835 messages
    Followed by:
    466 members
    Thanked:
    1749 times
    GMAT Score:
    770
    Post Sun Mar 18, 2012 5:34 am
    fangtray wrote:
    The annual rent collected by a corporation from a certain building was x percent more in 1998 than in 1997 and y percent less in 1999 than in 1998. Was the annual rent collected by the corporation from the building more in 1999 than in 1997?

    1) x>y
    2) xy/100 < x-y

    The hard part of this question is statement #2. What is a good strategy for this question?

    sorry i'm not sure how to add the answer and black it out so i'll write the answer in a few posts.
    Let the rent collected in 1997 = R
    Then rent collected in 1998 = R + Rx/100 = R(1 + x/100)
    Rent collected in 1999 = R(1 + x/100) - y% of R(1 + x/100) = R(1 + x/100)(1 - y/100)

    Question is: Is R(1 + x/100)(1 - y/100) > R? OR Is 1 + x/100 - y/100 - xy/10000 > 1? OR Is x - y > xy/100?

    (1) x > y, which does not imply whether x - y > xy/100 or not; NOT sufficient.

    (2) xy/100 < x - y is exactly what the question is asking for; SUFFICIENT.

    The correct answer is B.

    _________________
    Anurag Mairal, Ph.D., MBA
    GMAT Expert, Admissions and Career Guidance
    Gurome, Inc.
    1-800-566-4043 (USA)

    Join Our Facebook Groups
    GMAT with Gurome
    https://www.facebook.com/groups/272466352793633/
    Admissions with Gurome
    https://www.facebook.com/groups/461459690536574/
    Career Advising with Gurome
    https://www.facebook.com/groups/360435787349781/

    fangtray Really wants to Beat The GMAT! Default Avatar
    Joined
    08 Sep 2011
    Posted:
    273 messages
    Followed by:
    3 members
    Thanked:
    4 times
    Post Sun Mar 25, 2012 2:02 am
    Anurag@Gurome wrote:
    fangtray wrote:
    The annual rent collected by a corporation from a certain building was x percent more in 1998 than in 1997 and y percent less in 1999 than in 1998. Was the annual rent collected by the corporation from the building more in 1999 than in 1997?

    1) x>y
    2) xy/100 < x-y

    The hard part of this question is statement #2. What is a good strategy for this question?

    sorry i'm not sure how to add the answer and black it out so i'll write the answer in a few posts.
    Let the rent collected in 1997 = R
    Then rent collected in 1998 = R + Rx/100 = R(1 + x/100)
    Rent collected in 1999 = R(1 + x/100) - y% of R(1 + x/100) = R(1 + x/100)(1 - y/100)

    Question is: Is R(1 + x/100)(1 - y/100) > R? OR Is 1 + x/100 - y/100 - xy/10000 > 1? OR Is x - y > xy/100?

    (1) x > y, which does not imply whether x - y > xy/100 or not; NOT sufficient.

    (2) xy/100 < x - y is exactly what the question is asking for; SUFFICIENT.

    The correct answer is B.
    How did you get the rephrase for the question, and if you don't happen to see the rephrase that way, is there no other way to find the relevance of statement 2?

    GMAT/MBA Expert

    GMATGuruNY GMAT Instructor
    Joined
    25 May 2010
    Posted:
    6113 messages
    Followed by:
    1043 members
    Thanked:
    5284 times
    GMAT Score:
    790
    Most Active Expert Most Responsive Expert Most Thanked Expert
    Post Sun Mar 25, 2012 3:24 am

    _________________
    Mitch Hunt
    GMAT Private Tutor and Instructor
    GMATGuruNY@gmail.com
    If you find one of my posts helpful, please take a moment to click on the "Thank" icon.
    Contact me about long distance tutoring!

    Free GMAT Practice Test How can you improve your test score if you don't know your baseline score? Take a free online practice exam. Get started on achieving your dream score today! Sign up now.

    Best Conversation Starters
    1 varun289 31 topics
    2 sana.noor 23 topics
    3 killerdrummer 21 topics
    4 Rudy414 19 topics
    5 sanaa.rizwan 14 topics
    See More Top Beat The GMAT Members...

    Most Active Experts
    1 image description Brent@GMATPrepNow

    GMAT Prep Now Teacher

    		 199 posts
    2 image description GMATGuruNY

    The Princeton Review Teacher

    		 134 posts
    3 image description Jim@StratusPrep

    Stratus Prep

    		 106 posts
    4 image description Anju@Gurome

    Gurome

    		 47 posts
    5 image description Jon@Admissionado

    Admissionado

    		 39 posts
    See More Top Beat The GMAT Experts