A train 280 m long, running with a speed of 63 km/hr will pass a tree in?	Choose the correct choice from the following:
A) 65 sec B) 16 sec C) 18 sec D) 13 sec E) 76 sec

Rationale: "speed = 63 * 5 / 18 = 35 / 2 m / sec time taken = 280 * 2 / 35 = 16 sec answer : b"
Answer: B