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9 August, 03:13

20% of the students are in one room, 4 students in another, and 20 in the other. How many students total

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  1. 9 August, 07:12
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    30/students

    Step-by-step explanation:

    Let the number of students be x

    (20% of x) + 4 + 20 = x

    20/100x + 24 = x

    Multiply each term by 100

    20x + 2400 = 100x

    100x - 20x = 2400

    80x = 2400

    x = 2400/80

    x = 30
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