- A7 km/h
- B6 km/h
- C8 km/h
- D7.5 km/h
Step-by-Step Solution
Downstream speed = 24/3 = 8 km/h; upstream speed = 24/4 = 6 km/h. Still-water speed = (8 + 6)/2 = 7 km/h.
Answer: A) 7 km/h
A boat covers 24 km downstream in 3 hours and the same 24 km upstream in 4 hours. What is the speed of the boat in still water?
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