Question

There are 400 students in a school and the ratio of the number of

boys to the number of girls is 3:1.How many more girls should be added

to make the ratio of boys and girls 3:2?​

Answer 1

Step-by-step explanation:

Let the total number of students=100

Ratio of boys and girls=2:3

2+3=5

No. of boys =

5

2

×100=40

No. of girls=

5

3

×100=60

If 20% of the boys leaves the class then 20% of 40

100

20

×40=8

Now number of boys=40−8=32

New ratio=32:60⇒8:15

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