- A8
- B7
- C6
- D9
Step-by-Step Solution
Downstream speed = 10 km/h, upstream speed = 6 km/h. Still-water speed = (10 + 6)/2 = 8 km/h.
Answer: A) 8
A boat covers 20 km downstream in 2 hours and 12 km upstream in 2 hours. Find the speed of the boat in still water (in km/h).
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