Calculate a) cost of goods sold, b) ending inventory, and c) gross marg Provide calculations for weighted average (AVG). Round "Unit Cost" Number of Units Unit Cost Sales Beginning Inventory 260 $110 Sold 160 $150 Purchased 500 113 Sold 400 152 Purchased 400 120 Sold 370 184 Ending Inventory 230 Cost of Goods Purchased Unit Cost Total Cost AVG (perpetual) Inventory Cost of Goods Sold #units Unit Cost Cost of Inventory Remaining Unit Cost Total Cost units Total Cost Beginning Sale Purchase II III Sale Purchase boo Sale Total COGS Total Purchases Gross Margin, AVG perpetual Sales COGS Gross Margin