Current Attempt in Progress Cullumber Inc. uses a periodic inventory system. Its records show the following for the month of May, in which 111 units were sold. Date Explanation Units {:[" Unit "],[" Cost "]:} Total Cost May 1 Inventory 51 $14 $714 15 Purchases 43 17 731 24 Purchases 60 18 1,080 Totals 154 $2,525 Calculate the ending inventory at May 31 and cost of goods sold using the FIFO, LIFO, and average-cost methods. (Round per unit cost to 3 decimal places, e.g. 15.647 and final answers to 0 decimal places, e.g. 5,125.) eTextbook and Media