- A4 km/h
- B5 km/h
- C3 km/h
- D4.5 km/h
Step-by-Step Solution
Check b = 4: 8 ÷ 3 + 8 ÷ 5 = 2 h 40 min + 1 h 36 min = 4 h 16 min ✓. (b = 5 gives 3 h 20 min.)
Answer: A) 4 km/h
Rowing 8 km up a stream and 8 km back takes Hari 4 h 16 min. The stream flows at 1 km/h. What is his speed in still water?
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