How many seconds will a train 100 meters long take to cross a bridge 180 meters long if the speed of the train is 36 kmph?\nOptions:\n(A) 54 sec\n(B) 28 sec\n(C) 25 sec\n(D) 45 sec\n(E) 24 sec Let's think first. Stream of consciousness:
User
D = 100 + 180 = 280\nS = 36 * 5/18 = 10 mps\nT = 280/10 = 28 sec
So, the answer is (B).
Assistant