Mathematics · Time and Distance
A boatman can row 42 km downstream and 30 km upstream in 6 hours. He can also row 35 km downstream and 45 km upstream in 7 hours. How much time will he take to row 32 km downstream and 35 km upstream if the speed of the boat in still water and the speed of the stream both increase by 1 km/h?
- 15 h 10 m
- 25 h 18 m
- 35 h 35 m
- 45 h 30 m✓
Correct answer
5 h 30 m
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