Calculate a) cost of goods sold, b) ending inventory, and c) gross methods and using perpetual inventory updating. Provide calcula Number of Units Unit Cost Sales Beginning inventory 250 $100 Sold 160 $140 Purchased 520 103 Sold 400 142 Purchased 410 110 Sold 370 174 Ending inventory 250 Book Cost of Goods Purchased Cast of Goods Sold Number of Unit Unit Cost Total Cost Number of Units Unit Cost Beginning Total Cost Sale 160 100 16,000 Purchase 520 103 53,560 Sale 400 103 41,200 Cost of Inventory Remaining Number of Units Un Coat Total Cost 250 100 25,000 90 100 1,000 90 100 9,000 520 103 53,560 90 100 9,000 120 103 12,360 X 100 9,000 X 103 12,360 410 110 45,100 90 100 9,000 120 103 12,360 Purchase 410 110 45.100 Sale 370 110 40,700 40 110 4,400 Total Purchases 58,660 Total COGS 97,000 Gross Margin, LIFO perpetual Sales COGS X Gross Margin