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value of x + y

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sanju09 GMAT Instructor
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value of x + y Post Wed Sep 15, 2010 1:03 am
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  • Lap #[LAPCOUNT] ([LAPTIME])
    What is the value of x + y?

    [1] x y = 24.

    [2] x/y = 8/3.



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    alivapriyada Really wants to Beat The GMAT!
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    Post Wed Sep 15, 2010 2:29 am
    Quote:
    What is the value of x + y?

    [1] x y = 24.

    [2] x/y = 8/3
    .

    stmnt 1- xy=24
    we cannot determine x+y
    Stmnt2 - x/y=8/3
    so x=8y/3
    or x+y=8y/3+y=11y/3
    not sufficient.

    combining both statements even wont result in any specific answer
    SO IMO E
    waiting for the OA and a better expanation!!

    GMAT/MBA Expert

    sanju09 GMAT Instructor
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    Post Wed Sep 15, 2010 2:56 am
    alivapriyada wrote:
    Quote:
    What is the value of x + y?

    [1] x y = 24.

    [2] x/y = 8/3
    .

    stmnt 1- xy=24
    we cannot determine x+y
    Stmnt2 - x/y=8/3
    so x=8y/3
    or x+y=8y/3+y=11y/3
    not sufficient.

    combining both statements even wont result in any specific answer
    SO IMO E
    waiting for the OA and a better expanation!!
    This is right that no statement alone is sufficient here. Let’s take the two together

    Put y = 3 x/8 from [2] in [1], a quadratic in x would be obtained, giving out two results for x; or if you put x = 8 y/3 from [2] in [1], a quadratic in y would be obtained, giving out two results for y. Hence, together too, insufficient

    E is right, is your wait over?

    _________________
    "If you are the master be sometimes blind, if you are the servant be sometimes deaf."

    — R Buckminster Fuller

    facebook

    https://www.facebook.com/pages/The-Princeton-Review-Lucknow/153205671537507


    Sanjeev K Saxena
    Quantitative Instructor
    The Princeton Review - Manya Abroad
    Lucknow-226001
    Tel: +91-522- 6002178
    Cell:+91-9670999928
    www.manyagroup.com

    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.
    alivapriyada Really wants to Beat The GMAT!
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    Post Wed Sep 15, 2010 3:00 am
    sanju09 wrote:
    alivapriyada wrote:
    Quote:
    What is the value of x + y?

    [1] x y = 24.

    [2] x/y = 8/3
    .

    stmnt 1- xy=24
    we cannot determine x+y
    Stmnt2 - x/y=8/3
    so x=8y/3
    or x+y=8y/3+y=11y/3
    not sufficient.

    combining both statements even wont result in any specific answer
    SO IMO E
    waiting for the OA and a better expanation!!
    This is right that no statement alone is sufficient here. Let’s take the two together

    Put y = 3 x/8 from [2] in [1], a quadratic in x would be obtained, giving out two results for x; or if you put x = 8 y/3 from [2] in [1], a quadratic in y would be obtained, giving out two results for y. Hence, together too, insufficient

    E is right, is your wait over?
    Smile Smile yes!!!!

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