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March 25, 2017

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A boat travels 60 km upstream and back again in 8 hours. If the speed of the boat is 16 km/h, what is the speed of the current?

  • Algebra 2 - ,

    Let the speed of the boat be x km/h

    60/(16+x( + 60/(16-x) = 5

    hint: multiply each term by (16+x)(16-x)

    (I got x=8)

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