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Find the time taken by a 280 m long train running at 72km/hr to cros a man standing on a platform?

A14 sec

B10 sec

C20 sec

D9 sec

Answer:

A. 14 sec

Read Explanation:

speed = 72km/hr = 72 x 5/18 m/s = 20m/s Distance = 280 m Time = Distance = 280/20 = 14 sec


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