Elsa's Boards sells a snowboard, Xpert, that is popular with snowboard enthusiasts. Information relating to Eisa's purchases of Xpert snowboards during September ia shown below. During the same month, 300 Xpert snowboards were sold. Elsa's uses a periodic inventory system Date Explanation Units Unit Cost Total Cost Sept. 1 Inventony Sept. 12 Purchases 112 Sept. 19 Purchases Sept. 26 Purchases 105 64 $99 6,336 104 11,648 107 5,350 50 Totals 350 $36,354 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 30s Cost of goods sold For both FIFO and LIFO, calculate the sum of ending inventory and cost of goods sold FIFO LIFO