Posted by **YASH** on Friday, May 27, 2011 at 8:30am.

a train is moving on a straight track n travels at a speed of72km/hr and passes a pole in 3 seconds. find the time taken by the train to pass the bridge of length of 540 m?

Sir in the solution i understood why we will get27 sec. but why we will add 3 sec?

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