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15 March, 09:07

In this year's 7th grade class, there are 4 boys for every 5 girls. How many girls are in the class if there are 20 boys in the class?

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Answers (2)
  1. 15 March, 10:21
    0
    25girls

    Step-by-step explanation:

    4b=5g

    20b=25g

    4b/20b=5g/?

    5g x 20b=100

    100/4b=25g
  2. 15 March, 10:38
    0
    No. of girls = 25

    Step-by-step explanation:

    Ratio of boys: girls = 4:5

    No. of boys = 4x

    No. of girls = 5x

    4x = 20 (No. of boys = 20)

    x = 20/4

    x = 5

    No. of girls = 5x = 5 * 5 = 25
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