A train 400 m in length crosses a telegraph post in 16 seconds. The speed of the train is?
Options:
(A) 22 kmph
(B) 77 kmph
(C) 54 kmph
(D) 71 kmph
(E) 90 kmph Stream of consciousness first, then make a decision:
S = 400/16 * 18/5 = 90 kmph
Thus, the answer is (E).