Sheridan Company uses a periodic inventory system. Its records show the following for the month of May, in which 85 units were sold. Date Explanation Units Unit Cost Total Cost May 1 Inventory 39 $11 $429 15 Purchases 33 14 462 24 Purchases 46 15 690 Totals 118 $1,581 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, 6.8. 15,647 and final answers to decimal places, 3.5,125) FIFO LIFO Average-cost Ending Inventory at May 31 $ $ Cost of goods sold $