In what time will a train 80 m long cross an electric pole, it its speed be 144 km/hr?  Select: A) 2.0 sec B) 2.8 sec C) 7.5 sec D) 2.3 sec E) 1.5 sec

Rationale: "speed = 144 * 5 / 18 = 40 m / sec time taken = 80 / 40 = 2.0 sec . answer : a"
Answer: A