Purchases Cost of Goods Sold Inventory Total Cost Quantity Unit Total Total Unit Unit Date Cost Quantity Quantity Cost Cost Cost Cost Jan 1 April 19 June 30 Sept. 2 Nov 15 Balances EX 6-9 Weighted average cost flow method under perpetual inventory system Obj. 3 Total Cost of goods The following units of a particular item were available for sale during the calendar year sold, $154,400 Jan Apr. 19 Inventory 4,000 units at $20 1 Sale 2,500 units June 30 Purchase 6,000 units at $24 Sept. Sale 2 4,500 units Purchase 1,000 units at $25 Nov. 15 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. Pres- ent the data in the form illustrated in Exhibit 5