Find the given attachments for answer.
Note: The adjusted trial balance is added.
Cost of Goods Sold = Beginning finished goods inventory + COGM - Ending Finished Goods Inventory = 69,000 + 311,000 -100,000 = 280,000.
Cost of goods available for sale = Beginning finished goods inventory + COGM
COGS = Cost of goods available for sale - Ending finished goods inventory.