- A15 km/h
- B3 km/h
- C18 km/h
- D12 km/h
Step-by-Step Solution
Upstream = 3 ÷ 0.25 = 12 km/h; downstream = 3 ÷ (1/6) = 18 km/h. Still water = 15 km/h.
Answer: A) 15 km/h
A boat travels 3 km upstream in 15 minutes and 3 km downstream in 10 minutes. What is its speed in still water?
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