Question

In the class of 40 students, the number of girls girls is z/3 of boys. then how many girls are there in the class​

Answer 1

let the no of boys be z

then the no of girls is z/3

Then,

z+z/3=40

4z/3=40

4z=120

z=30

no of girls=z/3

no of girls=10

Answer 2

Answer:

10 girls

Step-by-step explanation:

boys=b

girls=g

g=1/3b

Given,

1/3 b + b=40

4/3 b = 40

b=40*3/4

b=30

g=40 - 30

g=10