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Algebra

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13. A boat cruises downstream for 2 hours before heading back. It takes 3.5 hours going upstream to get back. If the speed of the stream is 8 mph, what is the speed of the boat in still water?:

a. 14.7 mph
b. 19.6 mph
c. 24.8 mph
d. 29.3 mph

  • Algebra - ,

    See if you can explain my equation to yourself

    3.5(x-8) = 2(x+8) then solve it, I got d)

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