What is the speed of the boat in still water

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A boat traveled 285.6 miles downstream and back. The trip downstream took 10.2 hours. The trip back took 34 hours. What is the speed of the boat in still water? What is the speed of the current?

I know the answer is boat: 18.2 mph, current: 9.8 mph, but how do I ond it? What kind of equation do I use?

 

Reference no: EM13187861

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