Question

In a class of 40 pupils, the number of girls is three-fifths of the number of boys. Find the number of boys in the class.

Answer 1

hii mate

Thank you for asking the question!

There is a class with 40 pupils, three fifth are the girls. so the number of boys will be calculated as follows.

Suppose Total pupils= 40

              Number of girls= 3\5       

              Number of boys= ?

According to a equation:

               y + 3 y\5 = 40

                       8 y\5 = 40

                              = 40*5\8

                              = 25

Hence the total number of boys are 25.

Hope it helps.

Answer 2

☺️hey mate! here's your answer!☺️

let x be the number of boys in the class.

since, total pupils = 40

and, girls = three fifth of number of boys.

$= \frac{3}{5} x$

so, According to the question,

number of girls + number of boys = total students in class

$= > \frac{3}{5} x + x = 40$

$= > \frac{3 + 5}{5} x = 40$

$= > \frac{8}{5} x = 40$

$= > x = 40 \times \frac{5}{8}$

$= > x = 5 \times 5$

$= > x = 25$

thus, number of boys in class = 25

hope it is helpful ✌️!