OB), s ystem EX 7-8 Weighted average cost flow method under perpetual inventory s The following units of vTotal Cost of Merchandise Sold, a particular item were available for sale during the calendar year: Inventory Sale 30,000 units at $30.00 24,000 units Jan. 1 Mar. May 2 Purchase 54,000 units at $31.00 Aug. 9 Sale Oct. 20 Purchase 21,000units at $32.10 $2,110,500 18 Show 45,000 units How 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