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Mike and Sue are leaving the same point in opposite

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Joined: 04 May 2006
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Mike and Sue are leaving the same point in opposite [#permalink]

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03 Feb 2008, 22:12
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Mike and Sue are leaving the same point in opposite directions at equal speeds. If the distance between them in two hours will be 6X, what would the distance between them be had mike drove twice as fast and Sue at half the speed?

(A) 3.75X (B) 7.5X (C) 8X (D) 8.5X (E) 9X
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Re: Motion problem [#permalink]

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04 Feb 2008, 02:16
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Mike and Sue are driving in opposite directions

So in two hours each of them is covering about 3X distance

now Mike drives faster twice -> so Mike will cover the double the distance =>6X

and Sue will cover half the distance traveling at half the speed so 1.5 X

total distance is 7.5 X =>B
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Re: Motion problem   [#permalink] 04 Feb 2008, 02:16
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Mike and Sue are leaving the same point in opposite

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