Question

School with 500 students has 30 math teachers. How many math teachers are needed for 750 students?

Answer 1

assuming a direct proportional variation.


`\bf \begin{array}{ccll} students&teachers\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 500&30\\ 750&t \end{array}\implies \cfrac{500}{750}=\cfrac{30}{t}\implies t=\cfrac{750\cdot 30}{500}\implies t=45`