His salary for 40 hours per week with an hourly rate is hours x the rate:
40 hours x $22 per hour = $880 per week.
If he is paid commission, to make the same , he needs to make $880 iin commissions.
The commission rate is 4%, to find how much sales is needed divide the amount he needs to make ( $880) by the rate:
880/ 4% = 880/ 0.04 = $22,000
He needs to sell $22,000
