What is the ratio of male teachers to male students?

Data:
Students: 180
Half male.
Male students: 180/2=90
Male teachers: 2
Ratio of male teachers to male students:
You can write the ratio in three different forms:
[tex]\begin{gathered} 2\colon90 \\ \\ 2\text{ to 90} \\ \\ \frac{2}{90} \end{gathered}[/tex]