Determine the cost of goods sold and ending inventory using (1) FIFO and (2) average cost, assuming Powder uses a periodic inventory system. (Round FIFO answers to the nearest whole dollar, eg. 5,275 and Average cost answers to 2 decimal places, eg. 15.25. Round per unit cost to 2 decimal places, eg. 15.25.) FIFO Average Cost Cost of goods sold $ $ Ending inventory NA