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