Question

Trey has answered 15 emails. This is the 20% of emails he must answer how many emails does he need to answer

Answer 1

let's say "x" is the total amount of emails, and therefore, "x" is the 100%, and we know that 15 is the 20%, so

`\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} x&100\\ 15&20 \end{array}\implies \cfrac{x}{15}=\cfrac{100}{20}\implies \cfrac{x}{15}=5\implies x=75`

Answer 2

Trey needs to answer 75 emails in total