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23 August, 08:05

Jarek buys jerseys for his team online. He pays a constant shipping price plus a special rate for each jersey. During the spring season Jarek paid $151 for 24 jerseys. In the summer season he paid $79 for 12 jerseys. What is the special rate Jarek pays for each jersey and how much does he pay for shipping?

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  1. 23 August, 10:33
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    1) 24r+s=$151

    2) 12r+s=$79

    1) - 2), we get

    (24r+s) - (12r+s) = $151-$79

    12r=$72

    r=$72/12=$6

    Substitute r the value into equation 1)

    s+24*$6=$151

    s=$151-$144

    s=$7

    So he pays $6 for the rate, $7 for the shipping.
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