- A5
- B4
- C6
- D4.8
Step-by-Step Solution
Upstream = 8 km/h (3 h) and downstream = 12 km/h (2 h); total time = 3 + 2 = 5 hours.
Answer: A) 5
The speed of a boat in still water is 10 km/h and the speed of the stream is 2 km/h. Find the total time taken to go 24 km upstream and return to the starting point (in hours).
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