A train is moving at a speed of 100 km/hour. The length of the train is 100 metre. In how much time will it cross a pole?
Choose the correct choice from the following answers:
A) 1 second B) 2.5 second C) 4 second D) 3.6 second E) 4.5 second
In order to cross the pole, the train will need to cover its own length of 100 meter. To cover 100x1000 meter, train takes 60 minutes or 60 x 60 = 3600 second. So, to cover 100 meter, train would take 3600 x 100 / 100 x 1000 = 3.6 second.   Answer: 3.6 second.
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A train is moving at a speed of 100 km/hour. The length of the train is 100 metre. In how much time will it cross a pole?