A train running at the speed of 40 km/hr crosses a pole in 27 seconds. What is the length of the train?
Choices:
A) 250  B) 300  C) 350  D) 400  E) 450

Rationale: "speed = ( 40 * 5 / 18 ) m / sec = ( 100 / 9 ) m / sec length of the train = ( speed x time ) = ( 100 / 9 * 29 ) m = 300 m . answer : b"
Answer: B