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REI sells snowboards. Assume the following information relates to REI's purchases of snowboards during September. During the same month, 109 snowboards were sold, REI uses a periodic inventory system. (a) Compute the ending inventory at September 30 using FIFO. LFO, and average-cost. (Round average cost per unit to 3 decimal places, e.s. 125.153 and final answers to 0 decimal places, e.g. 125.)