Three identical units of merchandise were purchased during July, as follows: Date Product T July 3 Purchase 10 Purchase 24 Purchase Total 223 Units Cost 1 $19 1 1 25 3 $66 $22 Average cost per unit Assume one unit sells on July 28 for $33. Determine the gross profit, cost of goods sold, and ending inventory on July 31 using (a) first-in, first-out, (b) last-in, first-out, Ending Inventory Gross Profit Cost of Goods Sold a. First-in, first-out b. Last-in, first-out c. Average