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GMATPREP Q#3

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colors Newbie | Next Rank: 10 Posts Default Avatar
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GMATPREP Q#3

Post Sun Dec 24, 2006 10:10 am
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 B)1.75 C)2.0 D)2.5 E)3.0
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

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