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1. A man rows a certain distance along the stream and against the stream in 1 hour and 1.5 hours respectively . If the velocity of the current is 3 km /hr. what is the speed of a man in still water?
- A. 12 km /hr
- B. 12 km /hr
- C. 12 km /hr
- D. 12 km /hr
Answer: Option D
Explanation:
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