A train 280 m long, running with a speed of 63 km/hr will pass a tree in?\nOptions:\n(A) 15 sec\n(B) 16 sec\n(C) 18 sec\n(D) 20 sec\n(E) 22 sec
Step-by-step reasoning:
(B)
Speed = 63 * 5/18 = 35/2 m/sec\nTime taken = 280 * 2/35 = 16 sec.

The answer is (B)