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OG Is x > y?

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AbeNeedsAnswers Master | Next Rank: 500 Posts Default Avatar
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OG Is x > y?

Post Wed Aug 23, 2017 9:24 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    Is x > y?

    (1) x = y + 2
    (2) x/2 = y - 1

    A

    Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!
    Post Thu Aug 24, 2017 9:57 am
    Hi AbeNeedsAnswers,

    We're asked if X is greater than Y. This is a YES/NO question. We can solve it by TESTing VALUES.

    1) X = Y +2

    With this Fact, we can see that X is "2 greater" than Y, so the answer to the question is ALWAYS YES. You can see this pattern with a few TESTs:
    IF....
    Y = 0, X = 2
    Y = 5, X = 7
    Y = -3, X = -1
    Etc.
    Fact 1 is SUFFICIENT

    2) X/2 = Y - 1

    IF....
    Y = 1, X = 0 and the answer to the question is NO
    Y = 3, X = 4 and the answer to the question is YES
    Fact 2 is INSUFFICIENT

    Final Answer: A

    GMAT assassins aren't born, they're made,
    Rich

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