Question

A class has a total number of 39 students. The number of males is 7 more than number of females. How many males and how many females?

Answer 1

Let number of male be y and
let number of female be x

so y=7+x

so y+x=39

7+x+x=39

x=16

and y=23

Answer 2

There are 23 males and 16 females in the class.