How many seconds will a train 100 meters long take to cross a bridge 170 meters long if the speed of the train is 36 kmph?  Choose the most appropriate option: A) 54 sec B) 65 sec C) 25 sec D) 45 sec E) 27 sec

Rationale: "d = 100 + 170 = 270 s = 36 * 5 / 18 = 10 mps t = 270 / 10 = 27 sec answer : e"
Answer: E