In what time will a train 45 m long cross an electric pole, it its speed be 108 km/hr?  Choose the correct choice from the following choices:
A) 0.5 B) 1.25 C) 1.5 D) 2.5 E) 3.5

Rationale: "speed = 108 * 5 / 18 = 30 m / sec time taken = 45 / 30 = 1.5 sec . answer : c"
Answer: C