A train 490 m long, running with a speed of 63 km/hr will pass a tree in?	Options
A) 15 sec	B) 16 sec	C) 28 sec	D) 20 sec	E) 25 sec

Rationale: "speed = 63 * 5 / 18 = 35 / 2 m / sec time taken = 490 * 2 / 35 = 28 sec answer : c"
Answer: C