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GMAT prep simple rate ques

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jkelk Just gettin' started! Default Avatar
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GMAT prep simple rate ques Post Wed Mar 14, 2012 10:53 am
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  • Lap #[LAPCOUNT] ([LAPTIME])
    Hi

    Please help solve the attached.

    Thanks,
    J
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    nitin_stmicro Just gettin' started! Default Avatar
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    Post Wed Mar 14, 2012 11:00 am
    relative distance built up in the 5 mins = speed difference X (5/60) hr.
    which is equal to 16 x 5/60 = 4/3 miles.

    the hiker's speed is 4 miles per hour

    so time required would be 4/3 miles divided by 4 miles per hour = 1/3 hour or 20 minutes.

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