Shown below is activity for one of the products of Denver Office Equipment January 1 balance, 500 units $55 per unit $27,500 Purchases: January 10: January 20: Sales: January 12: January 28: Required: 500 units $60 per unit 1,000 units @ $63 per unit 800 units 750 units Compute the January 31 ending inventory and cost of goods sold for January, assuming Denver uses average cost and a perpetual Inventory system. (Do not round intermediate calculations. Round your final answers to nearest whole dollar amount.) Ending inventory Cost of goods sold