Date Waterway Corp. sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Waterway Corp.'s purchases of Ezslide snowboards during September. During the same month, 108 EZslide snowboards were sold. Waterway Corp. uses a periodic inventory system. Explanation Units Unit Cost Total Cost Sept. 1 Inventory 10 $110 $1,100 Sept. 12 Purchases 53 113 5,989 Sept. 19 Purchases 6,156 Sept. 26 Purchases 115 2,645 Totals 140 $15,890 54 114 23 (a) Compute the ending inventory at September 30 using the FIFO, LIFO and average-cost methods. (Round average cost per unit to 3 decimal places, e.g. 125.153 and final answers to o decimal places, e.g. 125.) AVERAGE-COST FIFO LIFO The ending inventory at September 30 (a) Compute the ending inventory at September 30 using the FIFO, LIFO and average-cost methods. (Round average cost per unit to 3 decimal places, e.g. 125.153 and final answers to o decimal places, e.g. 125.) LIFO AVERAGE-COST The ending inventory at September 30 FIFO (b) Compute the cost of goods sold at September 30 using the FIFO, LIFO and average-cost methods. (Round average cost per unit to 3 decimal places, e.g. 125.53 and final answers to o decimal places, e.g. 125.) FIFO LIFO AVERAGE-COST Cost of goods sold Click if you would like to Show Work for this question: Open Show Work