The following cost and inventory data are taken from the accounting records of Lipson Company for th Costs incurred: Rent of office building 24,000 Commission to sales agent 12,000 Direct wages 80,000 Purchases of raw materials 128,000 Indirect labour 40,000 Maintenance, factory equipment 9,000 Advertising expense 80,000 Insurance, factory equipment 3,800 Sales staff salaries 50,000 Rent, factory equipment 24,000 Supplies 14,200 Depreciation, office equipment 13,000 Depreciation, factory equipment 29,000 Sales(4500 units) 8,10,000 Inventory data: