Question

Lee sells electronics. He earns a 5% commission on each sale he makes. If Lee wants to make $100 in commission, what is the dollar amount of electronics he must sell?

Answer 1

This questions can be answer by the rule of three.

$\begin{gathered} 100\rightarrow5 \\ x\rightarrow100 \end{gathered}$

Then he has to sell

$\begin{gathered} x=\frac{100\cdot100}{5} \\ =\frac{10000}{5} \\ =2000 \end{gathered}$

Therefore, Lee has to sell $2000 of electronics.