A au Date $295 4959 so 300 E6.10(LO 2, 6) 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: Explanation Units Unit Cost/Price Nov. 1 Beginning inventory 30 Purchases Sales (42) 460 145 Purchases 40 305 Sales (50) 470 Ch 086) 25 Purchases 25 5 12 19 22 30 310 4360 33 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.) b. 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.)