Answer:
A
Step-by-step explanation:
So if 45 students represent 1/5 of the school, and x is the number of students in the school, then 45 will simply represent 1/5 of x.
This means that the equation is 1/5x = 45.
Now, you have to solve the equation.
[tex]\frac{1}{5} x = 45[/tex]
Multiply both sides of the equation by 5
[tex]\frac{1}{5}x * 5 = 45 * 5\\x = 225[/tex]
This means that there are 225 students.