The percentage of profit margin that the plumbing supplies manager realizes that he has = 15% Total sales for the month made by the plumbing supplies manager = $23000 Then Amount of profit that has been made by the plumbing sales manager = 15% * 23000 dollars = (15/100) * 23000 dollars = 15 * 230 dollars = 3450 dollars So the plumbing manager makes a profit of $3450 in the month as can be seen from the above deduction.