- A4 km/h
- B2 km/h
- C8 km/h
- D6 km/h
Step-by-Step Solution
Downstream 8 km/h, upstream 4 km/h; difference = 4 km/h, which is always twice the stream speed.
Answer: A) 4 km/h
If a boat's speed in still water is 6 km/h and the river's speed is 2 km/h, by how much is its downstream speed greater than its upstream speed?
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