Ratio of male to female teachers = 3 : 7
Explanations:Number of male teachers = 15
Number of female teachers = 35
[tex]\begin{gathered} \text{Ratio of male to female teachers = }\frac{Number\text{ of male teachers}}{\text{Number of female teachers}} \\ \text{Ratio of male to female teachers = }\frac{15}{35} \\ \operatorname{Re}duce\text{ to the lowest term by dividing the numerator and denominator by 5} \\ \text{Ratio of male to female teachers = }\frac{15\div5}{35\div5} \\ \text{Ratio of male to female teachers = }\frac{3}{7} \end{gathered}[/tex]Ratio of male to female teachers = 3 : 7