- A5
- B4
- C8
- D6
Step-by-Step Solution
Upstream speed = 4 km/h, downstream speed = 8 km/h; boat speed = (8 + 4)/2 = 6 km/h.
Answer: D) 6
A boat covers 24 km upstream in 6 hours and 24 km downstream in 3 hours. Find the speed of the boat in still water (in km/h).
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