A train 200 m long can cross an electric pole in 20 sec and then find the speed of the train? Choose the correct choice from the following answers: A) 987 B) 271 C) 72 D) 27 E) 36

Rationale: "length = speed * time speed = l / t s = 200 / 20 s = 10 m / sec speed = 10 * 18 / 5 ( to convert m / sec in to kmph multiply by 18 / 5 ) speed = 36 kmph answer : e"
Answer: E