Question

There are 60 students in a class.Of these,40are boys.If a is the percentage of girls,then find the value of a

Answer 1

Total no. of students = 60

No. of boys = 40

No. of girls = 20 ( 60 - 40 )


a = percentage = 20 / 60 × 100

= 33.33 %

Answer 2

Given :

There are 60 students in a class.Of these,40are boys.

To Find :

If a is the percentage of girls,then find the value of a

Solution:

Number of boys = 40

Total number of students = 60

Number of girls = 60-40

Number of girls = 20

Percentage of girls = $\frac{\text{No. of girls}}{\text{No. of students}} \times 100$

Percentage of girls =$\frac{20}{60} \times 100=33.33%$

So, The value of a is 33.33%