Let B = boys, G = girls
So B:G=2:3
Number of girls = 18,
To get the total from a known quantity of the proportion, you can always divide the known quantity with its respective proportion of the total:
Total = (girls' number)/(girls' proportion)
Girls' number=18
Girls' proportion= 3/(2+3)
=3/5
Total:
[tex]\begin{gathered} \frac{18}{\frac{3}{5}} \\ =18(\frac{5}{3}) \\ =6(5) \\ =30 \end{gathered}[/tex]In summary, Coach Snyder's class has 30 students.
