A train is 360 meter long is running at a speed of 45 km/hour. In what time will it pass a bridge of 140 meter length?	Answers.
A) 15 B) 44 C) 40 D) 27 E) 12

Rationale: "speed = 45 km / hr = 45 * ( 5 / 18 ) m / sec = 25 / 2 m / sec total distance = 360 + 140 = 500 meter time = distance / speed = 500 * ( 2 / 25 ) = 40 seconds answer : c"
Answer: C