destin12 destin12

03-07-2018
Mathematics

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

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jdoe0001 jdoe0001

03-07-2018

assuming a direct proportional variation.

[tex]\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[/tex]

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