Question

Tonya is a real-estate agent with a commission rate of 7%. She wants to earn a commission of $12,900. What is the minimum amount of real estate she needs to sell? Round to the nearest

dollar.

Answer 1

well, she needs to sell $"x", which oddly enough is the 100%.

now, we also know that 7% of "x" is $12900, which is what Tonya takes home.

`\begin{array}{ccll} amount&\%\\ \cline{1-2} x & 100\\ 12900& 7 \end{array} \implies \cfrac{x}{12900}~~=~~\cfrac{100}{7} \\\\\\ 7x=1290000\implies x=\cfrac{1290000}{7}\implies x\approx 184286`