- A2.5 km/h
- B11.5 km/h
- C12 km/h
- D12.5 km/h
Step-by-Step Solution
Downstream speed = 30/2 = 15 km/h; upstream = 30/3 = 10 km/h. Still-water speed = (15 + 10)/2 = 12.5 km/h.
Answer: D) 12.5 km/h
A boat covers 30 km downstream in 2 hours and the same 30 km upstream in 3 hours. What is the speed of the boat in still water?
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