- A7
- B6
- C7.5
- D8
Step-by-Step Solution
Downstream = 24/3 = 8 km/h; upstream = 24/4 = 6 km/h; still-water speed = (8 + 6)/2 = 7 km/h.
Answer: A) 7
A boat covers 24 km downstream in 3 hours and returns the same distance upstream in 4 hours. What is the speed of the boat in still water? (answer in km/h)
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