Question

In a class there are 40 students 30 are boys and what is the percentage of girls ....​

Answer 1

25%

Explanation:

Total= 40 students

boys +girls= 40

30 +girls= 40

number of girls

= 40 -30

= 10

Percentage of girls

`= (10)/(40) * 100\% \\ = 25\%`

Alternatively,

percentage of girls

= 100% -(percentage of boys)

`= 100\% - ( (30)/(40) * 100\%) \\ = 100\% - 75\% \\ = 25\%`