Question

Henry is an agent for movie stars. he earns 10% of his client's salaries, if he made $72000 last year, how much did his clients make in all?

Answer 1

his clients made "x", which oddly enough is the 100%, but we also know that 10% of that is $72,000, so

`\begin{array}{ccll} amount&\%\\ \cline{1-2} x & 100\\ 72000& 10 \end{array} \implies \cfrac{x}{72000}~~=~~\cfrac{100}{10}\implies \cfrac{x}{72000}=10\implies x=720000`