Duty Drawback Manager Accounting Department, Sony Technology Center     Concept: Percent Percent Problem: Duty refunds Percent Solution Concept: International Trade and Tariffs   Work Skills Jobs and Careers   The equations used to solve the problem are as follows: value of monitor x rate of duty = duty paid duty paid x 99% = duty refund # of monitors sold x duty refund = total duty on sale of monitors Calculations: $400. x .03 = $12 $12. x .99 = $11.88 $11. 88 x 9000 = $ 106,920