A 1200 m long train crosses a tree in 120 sec, how much time will I take to pass a platform 1200 m long? Pick.
A) 200 sec B) 240 sec C) 167 sec D) 197 sec E) 179 sec

Rationale: "l = s * t s = 1200 / 120 s = 10 m / sec . total length ( d ) = 2400 m t = d / s t = 2400 / 10 t = 240 sec answer : b"
Answer: B