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GMATPREP Q#3

This topic has 1 member reply
colors Newbie | Next Rank: 10 Posts Default Avatar
Joined
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Posted:
4 messages

GMATPREP Q#3

Post Sun Dec 24, 2006 10:10 am
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    A circular jogging track forms the edge of a circular lake that has diameter of 2 miles. Johanna walked once around the track at the average rate of 3mph. If t represents the number of hours it took Johanna to walk completely around the lake, which of the following is a correct statement?

    A) 0.5<t<.75
    B)1.75<t<2.0
    C)2.0<t<2.5
    D)2.5<t<3.0
    E)3.0<t<3.5

    If these questions are posted before, please tell me by whom, so I can see their posts. Thanks!!

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    thankont Senior | Next Rank: 100 Posts
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    Post Mon Dec 25, 2006 12:26 am
    Circumference of lake is 2*pi*r = pi*2miles (diameter = 2*r) approx 6.28
    so 6<6.28<7.5 divide by t=3 and get 2<t<2.5

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