Tyler Company has the following information related to purchases and sales of one of its inventory items. Date Description Units Purchased at Cost Units Sold at Retail Sept. 1 Sept. 10 Beginning inventory 400 units @ $15 Purchase 600 units @ $16 Sept. 20 Sales 660 units @ $27 Sept. 25 Purchase 900 units at $18 Assume the company uses a perpetual inventory system. Required: Calculate ending inventory and cost of goods sold using the FIFO, LIFO, and average cost methods. Cost of goods sold Ending inventory FIFO LIFO Avg Cost