the ratio of boys to girls is 3:2. If there are thirty students, how many students are girls?
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the ratio of boys to girls is 3:2. If there are thirty students, how many students are girls?
2 / [2+3] x 30 =
2/5 x 30 =60/5 =12 are girls.
30 - 12 =18 are boys, so that:
18:12 =3:2
the ratio of boys to girls is 3:2, so to make this ratio a fraction you would write, (number of boys) / (total number of boys and girls) = 3/5
the ratio of girls to boys is 2:3, so to make this ratio a fraction you would write, (number of girls) / (total number of boys and girls) = 2/5
so the total number of students that are girls would be, (the fraction representing the number of girl students) * (number of all students) = 2/5 * 30 = 12