- A4.5 hours
- B6 hours
- C5 hours
- D9 hours
Step-by-Step Solution
Downstream speed = 20 ÷ 2.5 = 8 km/h. 36 ÷ 8 = 4.5 hours. (The upstream data is not needed.)
Answer: A) 4.5 hours
A boat goes 24 km upstream in 6 hours and 20 km downstream in 2.5 hours. In how many hours will it cover 36 km downstream?
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