The length of a bridge in meters, which a train 90-meters long and traveling at 45 km/hr can cross in 30 seconds is?	Choices
A) 145
B) 215
C) 265
D) 285
E) 375

Rationale: 45 km / h = 45000 m / 3600 s = 12.5 m / s in 30 seconds , the train can go 30 ( 12.5 ) = 375 meters let x be the length of the bridge . x + 90 = 375 meters x = 285 meters the answer is d .
Answer: D