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At 9am train X left from station A towards station B at uniform speed
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24 Apr 2023, 05:26
24 Apr 2023, 05:26
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Question Stats:
77% (02:57) correct
22% (01:33) wrong based on 18 sessions
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At 9am train X left from station A towards station B at uniform speed of 90km/hr. After 2 hours another train Y leaves from station B on a parallel track towards station A at uniform speed of 60km/hr. If train X reached station B at 2pm, at what time will the two trains cross each other?
10 : 12am
10 : 48am
11 : 20am
12 : 48pm
1 : 20pm
10 : 12am
10 : 48am
11 : 20am
12 : 48pm
1 : 20pm
Re: At 9am train X left from station A towards station B at uniform speed
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05 May 2023, 08:15
05 May 2023, 08:15
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Train X starts at 9 AM and reaches station B at 2 PM at a speed of 90km/hr. so the total distance between station A and B is 90*5=450km. Train X starts 2 hour earlier than train Y covering 90*2=180 miles already. so when train X and Y will cross, they will cover 450-180=270km together at a speed of (90+60)km/hr=150km/hr. Time taken to cover 270km at 150km/hr is 1 hour 48 minutes. so they will cross each other at 12:48. Answer D is correct.
gmatclubot
Re: At 9am train X left from station A towards station B at uniform speed [#permalink]
05 May 2023, 08:15
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