In what time will a train 55 m long cross an electric pole, it its speed be 36 km/hr?  Answers.
A) 5.5 B) 4.5 C) 3.5 D) 2.5 E) 1.5

Rationale: "speed = 36 * 5 / 18 = 10 m / sec time taken = 55 / 10 = 5.5 sec . answer : a"
Answer: A