Find the time taken by a 280 m long train running at 72km/hr to cros a man standing on a platform?A14 secB10 secC20 secD9 secAnswer: A. 14 sec Read Explanation: speed = 72km/hr = 72 x 5/18 m/s = 20m/s Distance = 280 m Time = Distance = 280/20 = 14 secRead more in App