What is the time taken by a train running at 54 km/hr to cross a man standing on a platform, the length of the train being 180 m?A10 secB12 secC20 secD15 secAnswer: B. 12 sec Read Explanation: 54 km/hr = 54x5/18=15 m/sec time = ( 180/ 15) s => time = 12 sRead more in App