- A3 hours
- B2 hours
- C4 hours
- D6 hours
Step-by-Step Solution
Boat = 3s, so upstream = 2s = 48 ÷ 6 = 8 ⇒ s = 4. Downstream = 4s = 16 km/h. Time = 48 ÷ 16 = 3 hours.
Answer: A) 3 hours
A motorboat is three times as fast in still water as the current. It needs 6 hours to go 48 km upstream. How long will the same 48 km take downstream?
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