Question
The speed of the boat upstream and downstream are in
the ratio of 3:4. If the boat covers a distance of 147 km in still water in 7 hours, determine the speed of the stream.Solution
Speed of the boat in still water = 147/7 = 21 km/h Let the speed of the stream be âxâ years According to question: (21 â x)/(21 + x) = 3/4 84 â 4x = 63 + 3x 7x = 21 x = 3 So the speed of the stream = 3 km/h
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