A 1200 m long train crosses a tree in 120 sec, how much time will I take to pass a platform 1000 m long? Pick:
A) 220 sec	B) 190 sec	C) 167 sec	D) 197 sec	E) 179 sec

Rationale: "l = s * t s = 1200 / 120 s = 10 m / sec . total length ( d ) = 2200 m t = d / s t = 2200 / 10 t = 220 sec answer : a"
Answer: A