Marigold Corp. uses a periodic inventory system. Its records show the following for the month of May, in which 75 units were sold. Unit Cost Units Total Cost May 1 Inventory 35 $9 $315 15 Purchases 29 12 348 24 Purchases 40 13 520 Totals 104 $1,183 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 $ $ Cost of goods sold $ $