A train 540 meters long is running with a speed of 54 kmph. The time taken by it to cross a tunnel 180 meters long is?\nOptions:\n(A) 33\n(B) 77\n(C) 48\n(D) 99\n(E) 22
Step-by-step reasoning process below:
(C)
D = 540 + 180 = 720\nS = 54 * 5/18 = 15 mps\nT = 720/15 = 48 se.

The final answer: (C)