What is the length of a bridge (in meters), which a train 148 meters long and travelling at 45 km/h can cross in 30 seconds?	Answers
A) 211 B) 219 C) 227 D) 235 E) 243

Rationale: "speed = 45 km / h = 45000 m / 3600 s = 25 / 2 m / s in 30 seconds , the train can travel 25 / 2 * 30 = 375 meters 375 = length of train + length of bridge length of bridge = 375 - 148 = 227 meters the answer is c ."
Answer: C