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18 June, 05:33

The 7th and 8th grades have enrollments of 520 and 650 respectively. The two grades have a total of 18 representatives on the Student Council. How many representatives should the 8th grade have if there is to be a fair representation of the two grades?

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  1. 18 June, 08:42
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    18 * (8th grade populaton) / (Total population)

    18 * (650 / (650 + 520))

    18 * (650 / 1170)

    11700 / 1170 = 10
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