A motorboat travels 128 mi in 4 hours going upstream. It travels 192 mi going downstream in the same amount of time. What is the rate of the boat in still water and what is the rate of the current...

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A motorboat travels 128 mi in 4 hours going upstream. It travels 192 mi going downstream in the same amount of time. What is the rate of the boat in still water and what is the rate of the current...

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I have never been good with word problems. This one has me stumped.