*E6-15 Powder, Inc. sells an Xpert snowboard that is popular with snowboard enthusiasts. The following information shows Powder's purchases and sales of Xpert snowboards during November: Apply perpetual and periodic FIFO and average cost. (LO 2, 6) Unit Sales Price $295 Date Nov. 1 5 12 19 22 25 Explanation Beginning inventory Purchases Sales Purchases Sales Purchases $460 Units Unit Cost 30 25300 (42) 305 (50) 30 310 33 40 470 Instructions (a) Determine the cost of goods sold and ending inventory using (1) FIFO and (2) average cost, assuming Powder uses a perpetual inventory system. (For average cost, use unrounded numbers in your calculations but round to the nearest cent for presentation purposes in your answer.) (1) Determine the cost of goods sold and ending inventory using (1) FIFO and (2) average cost, assuming Powder uses a periodic inventory system. (For average cost, use unrounded numbers in your calculations but round to the nearest cent for presentation purposes in your answer.)