Challenge Problem Showdown – April 30th, 2012

Tom Williams —  May 2, 2012 — Leave a comment

We invite you to test your GMAT knowledge for a chance to win! Each week, we will post a new Challenge Problem for you to attempt. If you submit the correct answer, you will be entered into that week’s drawing for a free Manhattan GMAT Prep item. Tell your friends to get out their scrap paper and start solving!

Here is this week’s problem:

From 2008 to 2009, the number of Easter eggs in a certain egg hunt rose 20%, then fell 17% from 2009 to 2010. From 2008 to 2009, the ratio of Easter eggs to Easter bunnies in the same hunt fell 20%, then rose 22% from 2009 to 2010. By what approximate percent did the number of bunnies change over the full period from 2008 to 2010?

To see the answer choices, and to submit your answer, visit our Challenge Problem Showdown page on our site.

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The weekly winner, drawn from among all the correct submissions, will receive One Year of Access to our Challenge Problem Archive, AND the GMAT Navigator, AND Our Six Computer Adaptive Tests ($82 value).

Tom Williams

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Tom Williams is a Marketing Associate at Manhattan Prep. His background and interests are primarily within New Media and Online Marketing. As such, he spends approximately 18 hours a day in front of a computer. When he’s not interacting with Manhattan Prep students on Facebook and Twitter, Tom can be found listening to records, rooting for the Mets and Jets, and reading history books.

No responses to Challenge Problem Showdown – April 30th, 2012

  1. Naveen kumar Gupta May 7, 2012 at 4:46 am

    In 2008
    Egg/Bunnies = x/y1= z

    In 2009
    Egg/Bunnies= 1.2x/y2 = 0.83z

    Now change in bunnies will be given by
    y2/y1 = 120/83

    or in other words % increase in bunnies will be 50% from 2008 to 2009

    Now in 2009
    x/y1=z

    in 2010
    0.83x/y2=1.22z

    Now change in bunnies will be given by
    y2/y1 = 83/122

    or in other words % decrease in bunnies will be 33% from 2009 to 2010

    So if we assume that initially we have 100 bunnies, then first we have to increase it by 50% & then decrease by 33%

    100 ——– 150 —— 103

    Which leaves us a reply of 3% increase from 2008 to 2010

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