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28 December, 12:24

The attendance at the school concert was 578. Admission was $2.00 for adults and $1.50 for students. The receipts were $985.00. How man adults and how man students attended the concert?

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  1. 28 December, 13:13
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    2x + 1.5 y = 985

    y = students

    x = adults

    x + y = 578

    *-2 * - 2

    -2x - 2y = - 1156

    2x + 1.5y = 958

    -2x - 2y = - 1156 (add these together)

    -0.5 y = - 198

    *-2 * - 2

    y = 396

    x + 396 = 578

    x = 182

    396 students

    182 adults
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