Three identical units of merchandise were purchased during July, as follows Product T Purchase Purchase Purchase Total Units Date uly 3 10 24 Cost $17.00 20.00 23.00 $60.00 Average cost per unit $20.00 Assume one unit sells on July 28 for $30.00. Determine the gross profit, cost of goods sold, and ending inventory on July 31 cost of ods sold, and ending inventory on buly 31 using to) frst-in, fis out, tb) last mn, trst out, and (o Gross Profit Cost of Goods Sold Ending Inventory a) First-in, first-out b) Last-in, first-out c) Average 61 X 55 X 58 X 16 - 10 X 32 x 29 X