How much time does a train 160 metres long running at 72 km/hr take to pass a pole?	Pick:
A) 8 s B) 2.5 s C) 7.5 s D) 7.6 s E) 7.4 s

Rationale: "explanation : 72 km / hr = 72 * 5 / 18 = 20 m / s speed = distance / time ; v = d / t 20 = 160 / t t = 8 s answer : a"
Answer: A