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The time it took car P to travel 600 miles was 2 hours less than the

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The time it took car P to travel 600 miles was 2 hours less than the  [#permalink]

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New post 31 Jul 2016, 04:17
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A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

75% (02:39) correct 25% (03:47) wrong based on 76 sessions

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The time it took car P to travel 600 miles was 2 hours less than the time it took car R to travel the same distance. If car P’s average speed was 10 miles per hour greater than that of car R, what was car R’s average speed, in miles per hour?

A. 40
B. 50
C. 60
D. 70
E. 80

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Re: The time it took car P to travel 600 miles was 2 hours less than the  [#permalink]

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New post 31 Jul 2016, 05:24
Let speed of car R be=x
Then speed of car P= x+10
A/Q,
(600/x)-(600/(x+10))=2

Solving for x=50 miles\hr.

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New post 17 Mar 2019, 13:16
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Re: The time it took car P to travel 600 miles was 2 hours less than the   [#permalink] 17 Mar 2019, 13:16
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