A boat goes 60 km upstream and 88 km downstream in 20 hours. In 26 hours it can go 80 km upstream and 110 km downstream. What is the speed of the boat in still water?
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A boat goes ·60 km upstream and 88 km downstream in 20 hours. In 26 hours it can go 80 km upstream and 110 km downstream. Determine the speed of stream and that of the boat in still water. [Solve with elimination) and graphical methed]
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