Totals 141 Ve nsructi b) Fo E6-5 thding inventory at September 30 and cost of goods sold using the FIFO ethods. Prove the amount allocated to cost of goods sold under each method. and LIFO ar both FIFO and LIFO, calculate the sum of ending inventory and cost of goods sold. hat do you notice about the answers you found for each method? m- Ballas Co. uses a periodic inventory system. Its records show the following for the ar- month of May, in which 68 units were sold. er- Units Unit Cost Total Cost May 1 15 24 30 25 35 90 s 8 Inventory Purchases Purchases Totals $240 275 420 $935 any 12 re