nbdlc inventory by three methods; cost of goods sold The units of an item available for sale during the year were as follows: Jan. 1 Inventory Mar. 10Purchase Aug. 30Purchase Dec. 12 Purchase There are 208 uni Determine the ending inventory cost and the cost of goods sold by three methods. 180 units at $108 224 units at $110 200 units at $116 196 units at $120 ts of the item in the physical inventory at December 31. The periodic inventory system is used. Cost of Inventory and Cost of Goods Sold Ending Inventory Cost of Goods Sold Inventory Method First-in, first-out (FIFO) Last-in, first-out (LIFO) Weighted average cost