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25 May, 15:48

A math club took a math test. Twelve of the members had an average score of 80. Eighteen of the members had an average score of 86. What was the class average?

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  1. 25 May, 19:07
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    12 x 80 = 960

    18 x 86 = 1548

    960 + 1548 = 2508

    12 + 18 = 30

    2508/30 = 83.6

    The class average is 83.6
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