Question

in a clas,45% of students are girls.if there are 22 boys in the class,then the total number of students in the class is ​

Answer 1

Answer is 40.

There are 45 percent are girls . Therefore (100-45)= 55 percent are boys .

But no. of boys are 22.

Let strength of class be x.

Therefore, 55% of x = 22

or, 55\100 * x = 22

or, 11\20 * x = 22

or, x = 22*20\11

or, x = 40

Therefore , the total no. of students in the class = 40 students.