There are 12 girls in a class this is 40% of the class how many boys are in the class?

The answer is 18 boys.

Step-by-step

To start off, you have to set up the problem as 40 percent over 100 percent equals 12 over x. Next, you multiply 100 and 12. You should get 1,200. Then, you divide 1,200 by 40. You will get 30. 30 is the amount of the whole class. Finally, you should subtract 30 and 12. You will then have your answer, 18.

Hope this helps! :)

2/3x + 7 = 29

step-by-step explanation:

two thirds = 2/3

plus a number = x

at least 29 = 29

there for you should get 2/3x + 7 = 29

the 1st digit is in the 100s n its 1

step-by-step explanation:

3,589÷18 = 199.389

so the first digit of the quotient is in the 100s n its 1