A train running at the speed of 40 km/hr crosses a pole in 9 seconds. What is the length of the train?	Choose the correct answer
A) 120 metres	B) 180 metres	C) 324 metres	D) 150 metres	E) 100 meters

Rationale: "speed = 40 x 5 / 18 m / sec = 100 / 9 m / sec . length of the train = ( speed x time ) . length of the train = 100 / 9 x 9 m = 100 m . answer : e"
Answer: E