There are 12 boys and 10 girls in your gym class if 6 boys joined the class how many girls would need to join for the ratio of boys to girls to remain the same

Answer 1

10/12 = (10+g)/(12+6)

5/6 = (10+g)/18

5 = (10+g)/3

10+g = 15

g=5 more girls needed to keep the ratio the same

15/18 = 10/12