Given the rate of commission, and the total sales:
1) If the commission is based on the total sales, then solve for the commission using this formula:
Commission = (rate of commission in percent ÷ 100) (total sales)
2) Find net proceeds in two different ways:
a. Net proceeds = (Total Sales) - [ (rate of commission/100) (Total Sales)
b.) Net proceeds = [ (100 - rate of commission) / 100) ] ( Total Sales)