- A3 hours
- B4 hours
- C2 hours
- D2 h 40 min
Step-by-Step Solution
Upstream speed = km/h. Time = hours. (2 h is the downstream time; 2 h 40 min uses the still-water speed.)
Answer: B) 4 hours
The boat in the figure has to come back from B to A, against the current. How long will the return trip take?
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