REI sels snowboards. Assume the following information relates to REl's purchases of snowboards during September. During the same month, 101 snowboards were sold. REl uses a periodic inventory system. (a) Compute the ending imventory 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 0 decimal places, es. 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 ploces, e.g. 125.153 and final answers to 0 decimal places, eg. 125.) eTextbook and Media Attempts: 0 of 3 used