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17 October, 16:54

4/7 of the students in a classroom are boys. If there are twelve girls in the class, how many total students are there?

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Answers (2)
  1. 17 October, 18:22
    0
    28 students

    Step-by-step explanation:

    If 4/7 of the students are boys,

    then 1 - 4/7 = girls

    7/7 - 4/7 = 3/7

    total students * 3/7 = girls

    total students * 3/7 = 12

    Multiply each side by 7/3

    total students * 3/7 * 7/3 = 12*7/3

    total students = 28
  2. 17 October, 18:33
    0
    28 students total.

    Step-by-step explanation:

    Let's use a ratio:

    boys : girls

    4 : 3

    16 : 12

    To find the total, we need to add 16 and 12 which equals 28
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