Weighted Average Cost Flow Method Under Perpetual Inventory System The following units of a particular item were available for sale during the calendar year: an. nentory Mar. 18 Sale May 2 Purchase Aug. 9 Sale Oct. 20 Purchase The firm uses the wcighted average cost method with a perpetual inventory system. Determine the cost of merchandise sold for cach sale and the inventory balance after cach sale. Present the data in the form illustrated in Exhibit S. Round unit cost to two decimal places, if necessary 30,000 units at $30.00 24,000 units 54,000 units at $31.00 45,000 units 21,000 units at $32.10 Schedule of Cost of Sold Weighted Average Cost Flow Method Cost of Merchandise Sold Purchases Inventory Date Quantity Unit Cost Total Cost Unit Cost Total Cost Quantity Unit Cost Total Cost an. 1 Mar. 18 May 2 Aug. 9 Oct. 20 Dec. 31 Balances