A train 600 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 choices.
A) 76 kmph  B) 108 kmph  C) 72 kmph  D) 34 kmph  E) 91 kmph

Rationale: "length = speed * time speed = l / t s = 600 / 20 s = 30 m / sec speed = 30 * 18 / 5 ( to convert m / sec in to kmph multiply by 18 / 5 ) speed = 108 kmph answer : b"
Answer: B