Two-thirds of the children in the fourth - grade class are girls. if there are 18 girls, what is the total number of children in the class?

For this case, the first thing to do is define a variable.

We have then:

Then we write the equation that models the problem:

From here, we clear the value of x.

We have then:

 the total number of children in the class is:

1) is right

step-by-step explanation:

this answer is !