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A motorboat takes 3 hours to travel 108 going upstream. The return trip takes 2 hours going downstream. What is the rate of the boat in still water and what is the rate of the current?
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Jul 19, 2018
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A motorboat takes 3 hours to travel 108 going upstream. The return trip takes 2 hours going downstream. What is the rate of the boat in still water and what is the rate of the current?
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Chris Green
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Let s and c be the rate of the boat in still water and the rate of the current, respectively. Then:
108/s-c=3
108/s+c=2
3s-3c=108
2s+2c=108
Solve for s and c
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Risal Fajar Amiyardi
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Jul 25, 2018
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