- A15 minutes
- B14 minutes
- C12 minutes
- D18 minutes
Step-by-Step Solution
Upstream = 1.6 ÷ 0.2 = 8 km/h. Downstream = 1.6 ÷ (400/3600) = 14.4 km/h. Still water = 11.2 km/h. 2.8 ÷ 11.2 = 0.25 h = 15 minutes.
Answer: A) 15 minutes
A boat takes 12 minutes to go 1.6 km upstream and 6 min 40 s to cover the same 1.6 km downstream. How long would it take to cover 2.8 km in still water?
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