- A20 km/h
- B16 km/h
- C15 km/h
- D18 km/h
Step-by-Step Solution
Let the boat's speed be . Upstream = , so and stream = 4. Downstream = 20 km/h.
Answer: A) 20 km/h
The speed of a stream is 25% of a boat's speed in still water. If the boat's upstream speed is 12 km/h, what is its downstream speed?
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