alleryA boat makes 18 km/h downstream and 10 km/h upstream. Its speed in still water is?
A8 km/h
B14 km/h
C16 km/h
D12 km/h
Answer & Solution
Correct answer: B. 14 km/h
Still-water speed is the average of the two, (18 + 10) / 2 = 14 km/h.
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