Question

$2,870 per month. He pays $574 a month for rent. What percent of his monthly pay goes to rent?

Answer 1

we know that 2870 is the 100%, what is 574 off of it in percentage?

$\begin{array}{ccll} amount&\%\\ \cline{1-2} 2870 & 100\\ 574& x \end{array} \implies \cfrac{2870}{574}~~=~~\cfrac{100}{x} \\\\\\ 5=\cfrac{100}{x}\implies 5x=100\implies x=\cfrac{100}{5}\implies x=20$