Use some thinking to answer the following question. A train 70 m long, running with a speed of 63 km/hr will pass a tree in?
Options:
(A) 140 sec
(B) 160 sec
(C) 176 sec
(D) 150 sec
(E) 170 sec
Speed = 63 * 5/18 = 35/2 m/sec
Time taken = 70 * 2/35 = 140 sec So the final answer is (A).