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

  • math -

    p --- cost of hockey stick
    s --- cost of hockey stick

    5p + 3h = 23
    5p + h = 20

    subtract the two equations, it is easy after that.

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