3. OfficeMart has found an error in its data. The percentage of selling and administrative overhead attributable to processing orders should be changed to 35% from 45% and the percentage attributable to supporting customers should be changed to 35% from 25%. A 1 Chapter 5: Applying Excel 2 3 Data B C D E 4 Manufacturing overhead $ 500,000 5 Selling and administrative overhead $ 300,000 6 7 Assembling Processing Units Orders Supporting Customers Other 8 Manufacturing overhead. 50% 35% 5% 10% 9 Selling and administrative overhead 10% 35% 35% 20% 10 Total activity 1,000 250 100 units orders customers 11 12 13 OfficeMart orders: Customers 1 customer 14 Orders 8 orders 15 16 Number of filing cabinets ordered in total 80 units Selling price $ 595 17 Direct materials S 180 18 Direct labor $ 50 19 (a) Based on new number of orders in Requirement 2, what is the customer margin under activity-based costing when the data are corrected? (Enter a loss as a negative amount.) Answer is complete but not entirely correct. Customer margin under activity-based costing (162,400)