Final answer:
To find the total amount of money Bia had in sales, divide her commission by the commission rate. The total money Bia had in sales is $157.50 divided by the commission rate in dollars.
Step-by-step explanation:
To find the total amount of money Bia had in sales, we need to divide her commission by the commission rate (percentage).
Let's assume the commission rate is x (in decimal form). We can set up the following equation:
$157.50 = x imes ext{sales}
To solve for x, we divide both sides of the equation by x:
rac{157.50}{x} = ext{sales}
Therefore, the total money Bia had in sales is $rac{157.50}{x} dollars.