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[solved] Gmat Prep. Q11

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maxim730 Senior | Next Rank: 100 Posts Default Avatar
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[solved] Gmat Prep. Q11

Post Wed Mar 14, 2007 5:52 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    Practise Test 2

    Please see image. Thanks for any help. Smile

    Doh!!. I figured it out, simple stupid error. Sad Will post my explanation later on.

    Ans.: D
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    Cybermusings Legendary Member Default Avatar
    Joined
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    Post Tue Mar 27, 2007 11:06 am
    Let Kate Charge x hours

    Therefore Pat charges 2x hours and Mark Charges 3 times of 2x = 6x hours

    x+2x+6x = 162

    x = 18
    Mark charges 6*18 = 108 Hours

    Hence the difference = 108-18 = 90 Hours

    pretty much a cakewalk

    Post Fri Sep 29, 2017 2:52 pm
    pat (P), kate (K) and mark (M).
    P=P
    P=2K (twice). therefore, K= P/2
    P=(1/3)M. therefore M=3P

    P+K+M = 162
    P + (P/2) + 3P = 162
    (2P+P+6P)/2 =162
    9P = 324
    P=36

    K=36/2= 18
    M=3*36= 108

    The difference between Kate and Mark is 108-18=90

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