# How long will it take for the train to clears the tunnel?

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A 500 mtr long train, travelling at 100 kph, enters a five km long tunnel.

How long 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 Jan 17, 2015

+1 vote

Total distance =5km+length of train=5+0.5=5.5km
Speed=100kmph=27.78m/s
Time=distance/speed=5500/27.78=198sec
Time=198sec=3.3minutes

answer Jan 18, 2015

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