Shown below is activity for one of the products of Denver Office Equipment January 1 balance, 510 units @ $60 $30,600 Purchases: January 10: January 20: 510 units $65 1,020 units @ $69 Sales: 740 units 760 units January 12: January 28: Required: Compute the January 31 ending inventory and cost of goods sold for January, assuming Denver uses LIFO perpetual inventory system. Ending inventory Cost of goods sold