Question

there are 22 girls in a class of 40 student find the ratio of 1 number of boys to number of girls and 2 number of girl to the number of student​

Answer 1

40 student = boys =

4

3

×40=30

Girls =1/4×40=10

< age boys> =20×30=600

< age girl > =18×10=180

⇒ girls =15 boys=20

< boys> =600/20=30

< girl > =180/15=12

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