View Policies Current Attempt in Progress REI sells snowboards. Assume the following information relates to REI's purchases of snowboards during September. During the same month, 108 snowboards were sold. REI uses a periodic inventory system. Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 10 $110 $1,100 Sept. 12 Purchases 53 113 5,989 Sept. 19 Purchases 54 114. 6,156 Sept. 26 Purchases 23 115 2,645 Totals 140 $15,890 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 FIFO LIFO AVERAGE COST