A train 100 meters long completely crosses a 300 meters long bridge in 45 seconds. What is the speed of the train is?
Options:
(A) 25 kmph
(B) 32 kmph
(C) 40 kmph
(D) 38 kmph
(E) 92 kmph Let's think first. Stream of consciousness:
S = (100 + 300)/45 = 400/45 * 18/5 = 32 kmph
So, the answer is (B).