Question: 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) 32
(B) 28
(C) 299
(D) 277
(E) 21 Let's think first. Some random reasoning:
S = (100 + 300)/45 = 400/45 * 18/5 = 32 The final answer: (A).