Question

My cousin needs help. ​

Answer 1

When you set up ratios and proportions like this, first write down in words how your setting up the ratios.

Are you doing
`\frac{~~\text{number of students~~}}{\text{number of teachers}}` or
`\frac{\text{number of teachers}}{~~\text{number of students~~}}`.

Once you do that, just stay consistent in the equation you set up.

(Did Elisa stay consistent?)