A 1200 m long train crosses a tree in 120 sec, how much time will it take to pass a platform 700 m long?A10 secB50 secC80 secD190 secAnswer: D. 190 sec Read Explanation: Speed = 1200/120 = 10 m/sec Total distance = 1200 + 700 = 1900 m Time = distance/speed = 1900/10 = 190 secRead more in App