Answer
$\frac{25}{100}=\frac{80}{n}$
(We are asked not to solve for $n$, so we stop here.)
Work Step by Step
We know that 25% of the emails is 80. Thus, to find out the total number of emails, we set up a proportion:
$\frac{25}{100}=\frac{80}{n}$
Where $n$ is the total number of emails.
(We are asked not to solve for $n$, so we stop here.)
