REI sells snowboards. Assume the following information relates to RET's purchases of snowboards during September. During the same month, 101 snowboards were sold. REI uses a periodic inventory system. Date Sept. 1 Sept. 12 Sept. 19 Explanation Units Unit Cost Total Cost Inventory 10 $112 $1,120 Purchases 50 115 5,750 Purchases 57 116 6,612 Sept. 26 Purchases 21 117 2,457 Totals: 138 $15,939 Your answer is correct Compute the ending inventory at September 30 using FIFO, LIFO, and average cost. (Round average cost per unit to 3 decimal places eg 125.153 and final answers to O decimal places, eg 125) Ending inventory at September 30 (b) eTextbook and Media FIFO 4313 LIFO 4025 AVERAGE-COST 4273 Attempts: 1 of 3 used Compute the cost of goods sold for the month using the FIFO, LIFO, and average cost methods found average cost per unit to 3 decimal places, eg 125.153 and final answers to O decimal places, 125) FIFO Cost of goods sold $ LIFO AVERAGE COST $