math

3/4 of the students in a school were girls and the rest were boys. 2/3 of the girls and 1/2 of the boys attended the school carnival. Find the total number of students in the school if 330 students did not attend the carnival.

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  1. g = 3b, since 3/4 = 3 * 1/4

    2/3 g + 1/2 b attended
    2/3 (3b) + 1/2 b = 5/2 b attended

    subtract that from the total (b+g) students:

    b+g - 5/2 b = 330
    4b - 5/2 b = 330
    3/2 b = 330
    b = 220
    so, g = 660

    There are 880 students
    660 girls and 220 boys

    440 girls and 110 boys attended: 550
    the remaining 330 did not attend.

    Nice twist to an otherwise common exercise.

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  2. I got 250, That is a much more resonable answer

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  3. The actual answer is 880 students. I checked with my teacher.

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  4. since you add the 330 to the 550

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  5. so HAH! I beat you!!!!

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  6. 250 boys

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