Splish Brothers Inc. uses a periodic inventory system. Its records show the following for the month of May, in which 140 units were sold. Unit Cost Units Total Cost 65 $13 $845 May 1 15 Inventory Purchases Purchases 54 16 864 24 75 17 1,275 $2,984 Totals 194 Compute the ending inventory at May 31 and cost of goods sold using the FIFO, LIFO, and average-cost methods. (Round per unit cost to 3 decimal places, e.g. 15.647 and final answers to 0 decimal places, e.g. 5,125.) FIFO LIFO Average-cost Ending inventory at May 31 $ $ $ $ ta Cost of goods sold $ $ $