A train 800 m long can cross a pole in 10 sec and then find the speed of the train?	Choose the most appropriate option:
A) 280  B) 282  C) 284  D) 286  E) 288

Rationale: "length = speed * time speed = l / t s = 800 / 10 s = 80 m / sec speed = 80 * 18 / 5 ( to convert m / sec in to kmph multiply by 18 / 5 ) speed = 288 kmph answer : e"
Answer: E