A train running at the speed of 60 km/hr crosses a pole in 21 seconds. Find the length of the train.  Choose the correct choice from the following answers.
A) 350 m  B) 145 m  C) 240 m  D) 135 m  E) 255 m

Rationale: "speed = 60 * ( 5 / 18 ) m / sec = 50 / 3 m / sec length of train ( distance ) = speed * time ( 50 / 3 ) * 15 = 350 meter answer : a"
Answer: A