There are 20 boys and 8 girls in the calligraphy group/kloc-0. Write down the ratio between the number of boys and girls, the ratio between the number of boys and the total number, and the number of girls and the total number.
Because there are 20 boys and 18 girls in the calligraphy group,
So the number of boys: the number of girls.
=20: 18= 10:
And because the total number =20+ 18.
=38, so
Ratio of the number of boys to the total number
=20:38= 10: 19
Percentage of female students in the total number of students.
= 18:38=9: 19