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?
Options:
(A) 287 sec
(B) 288 sec
(C) 48 sec
(D) 61 sec
(E) 17 sec Hmmm, my stream of consciousness:
D = 500 + 230 = 730
S = 44 * 5/18 = 12 mps
T = 730/12 = 61 sec So, the answer is (D).