3. OfficeMart has found an error in its data. The percentage of selling and administrative overhead attributable to processing orders should be changed to 30% from 45% and the percentage attributable to supporting customers should be changed to 40% from 25%. A 1 Chapter 7: Applying Excel 2 3 Data 4 Manufacturing overhead 5 Selling and administrative overhead 6 7 B Manufacturing overhead 9 Selling and administrative overhead 10 Total activity 11 12 13 OfficeMart orders: 14 Customers 15 Orders 16 Number of filing cabinets ordered in total 17 Selling price 18 Direct materials 19 Direct labor Customer margin under activity-based costing $ $ Product margin under the traditional costing system B $ $ $ 500,000 300,000 Assembling Units 50% 10% 1,000 units C Processing Orders 1 customer 13 orders 80 units 595 180 50 35% 30% 250 orders D Supporting Customers 5% 40% 100 customers E Other (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.) 10% 20% (b) Based on new number of orders in Requirement 2, what is the product margin under the traditional costing system when the data are corrected? (Enter a loss as a negative amount.)