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GMATPrep question

This topic has 1 member reply
MonicaKhan Junior | Next Rank: 30 Posts Default Avatar
Joined
06 Apr 2007
Posted:
16 messages

GMATPrep question

Post Sun Apr 22, 2007 3:33 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    Any help on the following question would be greatly appreciated. Thank you.

    If x and y are integers and x > 0, is y > 0?

    (1) 7x - 2y > 0
    (2) -y < x

    I think both statements are independently sufficient to answer the question, and so I believe the answer is D, but the answer is apparently E.

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    jayhawk2001 Community Manager
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    Post Sun Apr 22, 2007 5:27 pm
    MonicaKhan wrote:
    Any help on the following question would be greatly appreciated. Thank you.

    If x and y are integers and x > 0, is y > 0?

    (1) 7x - 2y > 0
    (2) -y < x

    I think both statements are independently sufficient to answer the question, and so I believe the answer is D, but the answer is apparently E.
    1 - insufficient.
    7x-2y > 0
    7x > 2y
    y < 7x/2

    x is positive, so y can take either positive or negative values

    2 - insufficient.
    -y < x
    y > -x
    Take x = 2, y can take -1 or +1. Hence insufficient

    So, E is the answer.

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