Weighted Average Cost Flow Method Under Perpetual Inventory System The following units of a particular item were available for sale during the calendar year: Jan. 1 Inventory 10,000 units at $75.00 Mar 18 Sale 8,000 units May 21 Purchase 18,000 units at $77.50 Aug. 9 Oct. 20 Sale 15,000 units Print tam Purchase 7,000 units at $80.25 The firm uses the weighted average cost method with a perpetual inventory system. Determine the cost of goods sold for each sale and the inventory balance after each sale. Present the data in the form illustrated in Exhibit 5. Round unit cost to two decimal places, if necessary. Schedule of Cost of Goods Sold Weighted Average Cost Flow Method Date Quantity Purchases Unit Cost Total Cost Quantity Cost of Goods Sold Unit Cost Inventory Total Cost Quantity Unit Cost Total Cost Jan. 1 Mar. 181 May 21 Aug. 9 Oct. 20 Dec. 31 Balances