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

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Math Expert
Joined: 02 Sep 2009
Posts: 59725
The time it took car P to travel 600 miles was 2 hours less than the  [#permalink]

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31 Jul 2016, 04:17
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Difficulty:

25% (medium)

Question Stats:

78% (02:46) correct 22% (03:36) wrong based on 94 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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Joined: 07 Jun 2015
Posts: 10
Re: The time it took car P to travel 600 miles was 2 hours less than the  [#permalink]

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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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Joined: 09 Sep 2013
Posts: 13736
Re: The time it took car P to travel 600 miles was 2 hours less than the  [#permalink]

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

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