Ford Co. uses a periodic inventory system. Its records show the following for the month of May, in which 75 units were sold. May 1 15 24 Inventory Purchase Purchase Totals Units Unit Cost 35 $8 30 12 40 13 105 Total Cost $280 360 520 $1,160 Compute the ending inventory at May 31 and cost of goods sold using the FIFO and LIFO methods. FIFO LIFO Ending inventory Cost of goods soldt