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

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Math Expert
Joined: 02 Sep 2009
Posts: 58320
Two trains starting from cities 300 miles apart head toward each other  [#permalink]

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19 Dec 2018, 01:10
00:00

Difficulty:

5% (low)

Question Stats:

91% (00:57) correct 9% (00:58) wrong based on 50 sessions

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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

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Location: India
Concentration: Sustainability, Marketing
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Re: Two trains starting from cities 300 miles apart head toward each other  [#permalink]

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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
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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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