Question

Out of a class of 40 students, 25% are girls. How many boys are in the class?​

Answer 1

There are 10 boys in the class.

Explanation:

Percentage can be written as a decimal. 25% in decimal form is 0.25, so all we have to do is multiply this decimal by 40.

`0.25*40=10`

Answer 2

Answer: 30 boys

Explanation:

If 25% of the students are girls, then 75% of the students are boys.

First, let's find what 75% of 40 is:

(75/100) x 40 = 0.75 x 40 = 30

So there are 30 boys in the class.