A train 280 m long, running with a speed of 72 km/hr will pass a tree in?
Options
A) 17 sec	B) 16 sec	C) 18 sec	D) 14 sec	E) 12 sec

Rationale: "speed = 72 * 5 / 18 = 20 m / sec time taken = 280 * 1 / 20 = 14 sec answer : d"
Answer: D