Question

Of the 40 students in Irene’s class, 30% are girls. How many girls are there in Irene’s class?

Answer 1

The number of girls in Irene's class is 12.

Explanation:

We can set up an equation.

Let x=the number of girls in Irene's class, and rewrite 30% as
`(30)/(100)`, (simplified to
`(3)/(10)`

`(x)/(40) = (3)/(10)`

Cross multiplying gives us

10x=40*3

10x=120

x=12

Thus, the number of girls in Irene's class is 12.

Answer 2

12 girls

Explanation:

40 times .30