Give stream of consciousness and then the final answer. A train of 24 carriages, each of 60 meters length, when an engine also of 60 meters length is running at a speed of 60 kmph. In what time will the train cross a bridge 3.5 km long?\nOptions:\n(A) 4\n(B) 3\n(C) 5\n(D) 7\n(E) 9
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D = 25 * 60 + 3500 = 5000 m\nT = 5000/60 * 18/5 = 300 sec = 5 mins
The final answer: (C).
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