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29 March, 15:52

5 hockey pucks and 3 hockey sticks cost $23. 5 hockey pucks and 1 hockey stick cost $20. How much does 1 hockey puck cost?

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  1. 29 March, 19:04
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    5p + 3s = 23

    5p + s = 20

    s = 20 - 5p

    5p + 3 (20-5p) = 23

    5p - 60 - 15p = 23

    -10p = - 37

    p = 3.70

    s = 1.50r
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