### Instruction: How much time does a train 125 metres long running at 60 km/hr take to pass a pole?
Answer Choices: (A) 7.9s (B) 2.5s (C) 7.5s (D) 7.6s (E) 7.4s.### Response: Let's reason about the multi-choice question.
60 km/hr = 60 * 5/18 = 16.67 m/s
Speed = distance/time; v = d/t
16.67 = 125/t
t = 7.5s
The answer is C