A train 3000 m long can cross an electric pole in 120 sec and then find the speed of the train?  Choose the correct option
A) 90  B) 95  C) 100  D) 105  E) 110

Rationale: "length = speed * time speed = l / t s = 3000 / 120 s = 25 m / sec speed = 25 * 18 / 5 ( to convert m / sec in to kmph multiply by 18 / 5 ) speed = 90 kmph answer : a"
Answer: A