- A3 km/h
- B4 km/h
- C10 km/h
- D2 km/h
Step-by-Step Solution
Let (×3) and . Then . Stream = km/h.
Answer: B) 4 km/h
Going 24 km upstream and 28 km downstream takes a boat 6 hours; going 30 km upstream and 21 km downstream takes 6.5 hours. What is the speed of the stream?
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