There are 25 girls in the grade. This is calculated by multiplying the ratio of girls to boys (4:5) by the number of boys (20):
4/5 = x/20
Cross multiply to solve for x:
5x = 4 * 20
5x = 80
x = 80/5
x = 16
So, there are 16 girls in the grade. Adding the 20 boys, the total number of students in the grade is:
20 boys + 16 girls = 36 students
Therefore, there are 20 boys in the grade.
In grade 9 The ratio of girl to boys is 4,5 if There are 20 boys How many boys are There
1 answer