Bramble Inc. uses a perpetual inventory system. Its records show the following for the month of May. Unit Date Explanation Units Cost May 1 Inventory 28 $11 May 15 Purchase 26 12 May 18 Sale (46) May 24 Purchase 44 Total 52 Total Cost $308 312 13 572 $1,192 (a) Calculate the cost of goods sold for May and the ending inventory at May 31 using the FIFO formula. Cost of goods sold $ Ending Inventory $