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Alvin can go upstream at a rate of 6 miles per hour and downstream at a rate of 12 miles per hour. One day while Alvin was on the river, he received a call telling him he needs to turn around and come home. So he turned around and 
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Lisa rowed her boat for two miles downstream. The trip took her 20 minutes. She then turned around and rowed back the two miles. It took her one hour to row back upstream. a. At what rate of speed did Lisa row downstream? b. At 
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Show a complete solution. Upstream, downstream. Juniorâ€™s boat will go 15 miles per hour in still water. If he can go 12 miles downstream in the same amount of time as it takes to go 9 miles upstream, then what is the speed of 
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Lisa rowed her boat for two miles downstream. The trip took her 20 minutes. She then turned around and rowed back the two miles. It took her one hour to row back upstream. a. At what rate of speed did Lisa row downstream? b. At 
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