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1. A boat can travel form point A to point B and return back to point a in 9 hours. Speed of the boat in still water is 8 km/h and the speed of the stream is 4 km/h. Find the distance between A and B.
- A. 18 km
- B. 18 km
- C. 18 km
- D. 18 km
Answer: Option B
Explanation:
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