Current Attempt in Progress Marigold Boards sells a snowboard, Xpert, that is popular with snowboard enthusiasts. Information relating to Marigold's purchases of Xpert snowboards during September is shown below. During the same month. 94 Xpert snowboards were sold. Marigold's uses a periodic inventory system Date Explanation Units Unit Cost HK5970 Total Cost HK$ 13,580 Sept. 1 Inventory 14 Sept. 12 Purchases 42 1.020 42.840 Sept. 19 Purchases 15 1.040 Sept 26 Purchases 49 1.050 15.600 51450 HKS 123.470 Totals 120 (a) Compute the ending inventory at September 30 and cost of goods sold using the FIFO and werage-cost methods. (Round per unit cost to 3 decimal places, eg. 15.125 and final answers to decimal places, es 125.) FIFO Average-Cost HKS HK$ The ending inventory at September 30 HKS HKS Cost of goods sold (b) For both FIFO and average-cost, calculate the sum of ending inventory and cost of goods sold. (Round per unit cost to 3 decimal places, eg 15.125 and final answers to decimal places, s. 125) FIFO Average-Cost HK$ HK$ The sum of ending inventory and cost of goods sold