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March 29, 2017

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5 hockey pucks and three hockey sticks costs $23. 5 hockey pucks and 1 hockey stick costs $20. How much does 1 hockey puck cost?

  • math - ,

    5p + 3s = 23
    5p + s = 20

    s = 20 - 5p

    5p + 3(20-5p) = 23
    5p - 60 - 15p = 23
    -10p = - 37
    p = 3.70

    s = 1.50

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