A train 500 meters long is running with a speed of 44 kmph. The time taken by it to cross a tunnel 230 meters long is?\nOptions:\n(A) 287 sec\n(B) 288 sec\n(C) 48 sec\n(D) 61 sec\n(E) 17 sec
Let's think step by step.
(D)
D = 500 + 230 = 730\nS = 44 * 5/18 = 12 mps\nT = 730/12 = 61 sec.

The final answer: (D)