Q: How many seconds will a train 100 meters long take to cross a bridge 130 meters long if the speed of the train is 36 kmph?
Options:
(A) 23 sec
(B) 65 sec
(C) 25 sec
(D) 45 sec
(E) 24 sec Let's give some random thoughts before answering.
D = 100 + 130 = 230
S = 36 * 5/18 = 10 mps
T = 230/10 = 23 sec
Therefore, the answer is (A).