Give stream of consciousness and then the final answer. A train 510 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long?\nOptions:\n(A) 40\n(B) 52\n(C) 26\n(D) 21\n(E) 14
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Speed = 45 * 5/18 = 25/2 m/sec\nTotal distance covered = 510 + 140 = 650 m\nRequired time = 650 * 2/25 = 52 sec
The final answer: (B).
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