Solution:
Let the total number of students = 100
Ratio of boys and girls = 2:3
2 + 3 = 5
No. of boys
[tex] = \frac{2}{5} \times 100 =40[/tex]
No. of girls
[tex] = \frac{3}{5} \times 100=60[/tex]
If 20% of the boys leaves the class then 20% of 40.
[tex] \frac{20}{100} \times 40 = 8[/tex]
×40=8
Now number of boys = 40 − 8 = 32
New ratio = 32:60⇒8:15
#EducationIsFree
