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1. In a stream running at 2 km/hr, a motor boat goes 10 km upstream and back again to the starting point in 55 minutes. Find the speed of the motor boat in the still water.
- A. 6 km/hr
- B. 6 km/hr
- C. 6 km/hr
- D. 6 km/hr
Answer: Option C
Explanation:
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