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Two trains starting from cities 300 miles apart head toward each other

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Math Expert
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Joined: 02 Sep 2009
Posts: 59018
Two trains starting from cities 300 miles apart head toward each other  [#permalink]

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New post 19 Dec 2018, 01:10
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

91% (00:56) correct 9% (00:58) wrong based on 51 sessions

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GMAT Club Legend
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Joined: 18 Aug 2017
Posts: 5261
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
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Re: Two trains starting from cities 300 miles apart head toward each other  [#permalink]

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New post 19 Dec 2018, 08:58
1
Bunuel wrote:
Two trains starting from cities 300 miles apart head toward each other at rates of 70 mph and 50 mph, respectively. How long does it take the trains to cross paths?

A. 1.5 hours
B. 2 hours
C. 2.5 hours
D. 3 hours
E. 3.5 hours



since trains are moving towards each other so relative speed would be 70+50 = 120 mph

time = 300/120 = 2.5 hrs IMO C
GMAT Club Bot
Re: Two trains starting from cities 300 miles apart head toward each other   [#permalink] 19 Dec 2018, 08:58
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Two trains starting from cities 300 miles apart head toward each other

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