The following units of a particular item were available for sale during the calendar year: Jan. 1 Inventory Mar. 18Sale May 2Purchase Aug. 9 Sale Oct. 20Purchase 30,000 units at $30.00 24,000 units 54,000 units at $31.00 45,000 units 21,000 units at $32.10 he firm uses the weighted average cost method with a perpetual inventory system. Determine the cost of merchandise 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 Weighted Average Cost Flow Method Purchases Cost of Merchandise Sold Unit Cost Total Cost Quantity Unit Cost Total Cost Date Quantity Jan. 1 Mar. 18 May 2