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Time - Distance question

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Manager
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Joined: 11 Apr 2011
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Time - Distance question  [#permalink]

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New post 17 May 2011, 07:23
00:00
A
B
C
D
E

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I found this question from one of the downloads in this club; however, the answer was a bit confusing. here goes the question-

A person's speed is between 25mph and 45 mph, if he takes 4 hrs to cover certain distance. If another person covers the same disatance in 2hrs, then his speed is between 45mph and 60 mph. What is the distance?
a. 116 b. 120 c. 122 d. 121 e. 130

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Re: Time - Distance question  [#permalink]

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New post 17 May 2011, 08:39
let the distance be d

1st person 25 < d/4 < 45 gives 100< d < 180

2nd person 45< d/2 < 60 gives 90 < d < 120

combining 100 < d < 120

only option a = 116 fits the place.

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Re: Time - Distance question &nbs [#permalink] 17 May 2011, 08:39
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