Jan. 1 Inventory Mar. 18 May 2 Aug. 9 Sale Weighted Average Cost Flow Method Under Perpetual Inventory System The following units of a particular item were available for sale during the calendar year: 10,000 units at $75.00 Sale 8,000 units Purchase 18,000 units at $77.50 15,000 units 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 Oct. 20 Cost of Goods Sold Purchases Unit Cost Date Quantity Total Cost Quantity Unit Cost Total Cost Jan, 1 Mar. 18 May 2 Aug. 9 Oct. 20 Dec. 31 Balances