Two trains pass each other on parallel lines. Each train is 100 metres long. When they are going in the same direction, the faster one takes 60 seconds to pass the other completely. If they are going in opposite directions they pass each other completely in 10 seconds. Find the speed of the slower train in km/h.
- A. 30 km/h
- B. 42 km/h
- C. 48 km/h
- D. 60 km/h
The correct answer is option A. 30 km/h. Can you explain this answer in the comments?
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