- A5
- B4.5
- C6
- D4
Step-by-Step Solution
Downstream speed = 18/3 = 6 km/h and upstream speed = 12/3 = 4 km/h. Speed in still water = (6 + 4)/2 = 5 km/h.
Answer: A) 5
A man rows 18 km downstream in 3 hours and 12 km upstream in 3 hours. Find the speed of the man in still water.
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