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GMATPrep Test 1 #2_PS #2

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kwah Rising GMAT Star Default Avatar
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GMATPrep Test 1 #2_PS #2 Post Sun Mar 11, 2012 9:20 pm
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  • Lap #[LAPCOUNT] ([LAPTIME])
    What is the most efficient way to achieve the result for the question attached?

    Answer: E

    Thanks,
    K
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    Jim@StratusPrep MBA Admissions Consultant
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    Post Mon Mar 12, 2012 8:13 pm
    simplify first to this:

    xy +z = xy + xz

    then

    z = xz

    when is this true?

    both sides will be 0 if z = 0 or

    both sides will be z if x = 1

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