# If there are 45 students and 40% are girls how many are boys?

## How do I know what numbers to use and how do I set up to solve.

Apr 17, 2018

$27$ boys.

#### Explanation:

$\text{Number of student} s = 45$

$\text{Number of girls" = (40/100 * 45) = "18 girls}$

$\text{Number of boys" = "Total Number of students" - "Number of Girls}$

$= 45 - 18 = \text{27 boys}$