Current Attempt in Progress REI sells snowboards. Assume the following information relates to REI's purchases of snowboards during September. During the same. month, 107 snowboards were sold. REl uses a periodic inventory system. Compute the ending inventory at September 30 using FIFO, LIFO, and average-cost. (Round average cost per unit to 3 decimal places, e.g. 125.153 and final answers to 0 decimal places, e. . 125.) Compute the cost of goods sold for the month 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 0 decimal places, es. 125.)