Question

Mr. Jones receives 10% commission on each sale that he makes. He carned $450 lastweek in commissions. How much were his sales?Rephrase: $450 is 10% of what number?

Answer 1

In order to calculate the total sales, knowing that his commission was $450, we can do the following rule of three:

`\begin{gathered} \text{\$450}\to10\text{\%} \\ x\to100\text{\%} \\ \\ (450)/(x)=(10)/(100) \\ (450)/(x)=(1)/(10) \\ x=450\cdot10 \\ x=4500 \end{gathered}`

So the total sales was $4500.