Answer:
Thus, the sales of the week were $400
Explanation:
Percentages
The salesman receives a 20% commission on all his sales.
One week the company pays $80 as commission.
This means that $80 corresponds to 20% of the sales.
To find the sales, we just divide the commission by the percentage (expressed as a decimal) as follows:
Sales = $80 / (20/100)
Sales = $80 / 0.20
Sales = $400
Thus, the sales of the week were $400