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Algebra 1

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Markus jogs 4 mi around a track at an average rate of r mi/h. Then he cools down by walking 1 mi at a rate 3 mi/h slower. His whole workout lasts 1 h. At what rates did Markus jog and walk?

  • Algebra 1 - Enough! - ,

    It will do you no good to keep posting the same question every minute or two!

  • Algebra 1 - ,

    That said, try this:

    Since time = distance/speed,

    4/r + 1/(r-3) = 1
    r = 6

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