How many seconds will a train 150 meters long take to cross a bridge 200 meters long if the speed of the train is 54 kmph?  Answers
A) 17 sec	B) 21 sec	C) 23.3 sec	D) 27.5 sec	E) 29 sec

Rationale: d = 150 + 200 = 350 s = 54 * 5 / 18 = 15 mps t = 350 / 15 = 23.3 sec c ) 23.3 sec
Answer: C