Question

There are 18 girls in Mr. Brimley's math class. If 40% of the students are girls, what is the best estimation for the number of boys in the class?

Answer 1

20

Explanation:

It is 40 percent ( given)

18/2=9

9×5=40 (100%)

Girls- 18( given)

Boys- 40-18=22

Rounded off-20

Answer 2

30

Explanation:

This is an easy one.

So, we know that 40% of the class is girls. We would need to use the other 60% as 60% of the class is boys and we would need to divide.

18/0.6=30

Therefore your answer is 30.

Hope this helps.