Riverbed Limited uses a perpetual inventory system. The inventory records show the following data for its first month of operations Explanation Units Unit Cost/Price Date Total Cost Balance in Units Aug. 2 Purchases 280 $60 $16,800 280 3 Purchases 560 90 50,400 840 10 Sales (300) 140 540 15 Purchases 900 120 108,000 1,440 25 Sales (315) 170 1,125 (a) Your answer is correct. Calculate the cost of goods sold and ending inventory using FIFO. (b) Cost of goods sold $ 46950 Ending inventory $ 128250 eTextbook and Media Assistance Used Attempts: 1 of 3 used Calculate the cost of goods sold and ending inventory using average cost. (Round average cost per unit to 2 decimal places, e.g. 1.25 and final answers to O decimal places, e.g. 5,125.) Cost of goods sold $ Ending inventory $