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How many seconds will elapse between the moment the front of the train enters the tunnel and the ...........

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A 440 yard long train, travelling at 80 mph, enters a 4.5 mile long tunnel.

How many seconds will elapse between the moment the front of the train enters the tunnel and the moment the end of the train clears the tunnel?

posted Aug 14, 2014 by Amarvansh

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1 Answer

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213.75 seconds


Distance = 4.5 miles +440 yard= 4.5 miles +440/1760 miles= 4.75 miles
Speed = 80 m/hr = 80/3600 m/sec= 1/45 m/sec
Time = 4.75/1/45= 213.75 sec

answer Aug 17 by Hanifa Mammadov



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