Exercise 6-4 Elsas Boards sells a snowboard, Xpert, that is popular with snowboard enthusiasts. Information relating to Elsas purchases of Xpert snowboards during September is shown below. During the same month, 317 Xpert snowboards were sold. Elsas uses a periodic inventory system. Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 68 $99 $ 6,732 Sept. 12 Purchases 118 103 12,154 Sept. 19 Purchases 52 109 5,668 Sept. 26 Purchases 131 105 13,755 Totals 369 $38,309 Compute the ending inventory at September 30 and cost of goods sold using the FIFO and LIFO methods. FIFO LIFO The ending inventory at September 30 $ $ Cost of goods sold $ $ LFor both FIFO and LIFO, calculate the sum of ending inventory and cost of goods sold. FIFO LIFO The sum of ending inventory and cost of goods sold $ $