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 1,000 units at $150 Mar. 18 Sale 800 units May 2 Purchase 1, 800 units at $155 Aug. 9 Sale 1, 500 units Oct. 20 Purchase 700 units at $160, 50 The 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