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Math Help - Quantitative Comparison

  1. #1
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    Quantitative Comparison

    Hi,

    So I am given the following rules:

    4<x<10
    3<y<5

    Quantity A
    x+y

    Quantity B
    14

    A) Quantity A is larger
    B)Quantity B is larger
    C) Both are equal
    D) Not enough information to determine

    Now, the answer is (D) - apparently. But I disagree.

    The answer of x+y cannot under any circumstance be larger than 13, correct? The largest numbers X and Y can be are 9 and 4, respectively.

    The solution in the book offers an explanation (which is basically adding those two rules above) of 7 <x+y < 15.

    I don't see how this is possible....under the set of rules given, the largest number should be 13 (which would mean Quantity B is always greater)

    This problem is found in Kaplan's GRE prep book.


    ****Nevermind figured it out -- was too focused on integers and discounted decimals ********
    Last edited by avasilev; May 31st 2012 at 05:29 PM.
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  2. #2
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    Re: Quantitative Comparison

    What if x = 9.75 (<10) and y = 4.75 (<5) ?
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  3. #3
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    Re: Quantitative Comparison

    Thanks for reply...tried to delete this post because I figured it out soon after. I was entirely too focused on integers and didn't account for decimals. Brain fart
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