Question

in a class of60 students, the number of girls is one third the number of boys .the number of girls is in class​

Answer 1

Answer:

let boys = x

so x/3+x=60

4x=180

x=45

so girls = 15

Answer 2

Let there be x number of boys.

The number of girls is one third the number of boys

Thus number of girls are x/3

Totsl students in the class are 60 students

x + x/3 = 60

(3x + x)/3 = 60

4x/3 = 60

Cross multiplication

4x = 180

x = 180/4

x = 45

There are 45 number of boys in the class

The number of girls = 60 - 45 = 15 girls.