Coucous Corp. uses the perpetual inventory system. Information related to Coucous' inventory for September. Unit Cost 200 Sep 1 Beginning inventory $20.00 units 600 8 Purchase $20.40 units 500 12 Sale units 400 16 Purchase $20.80 units 24 Purchase 100 units $21.60 400 29 Sale units Calculate the ending inventory and Cost of Goods Sold using the FIFO cost formula at September 30 (s calculations) (b) Calculate the ending inventory and cost of Goods Sold using the average cost formula at September 3 calculations)