Shown below is activity for one of the products of Denver Office Equipment: January 1 balance, 620 units @ $55 per unit $34 , 100 Purchases : January 10 : 620 units @ $60 per unit January 20: 1, 240 units @ $65 per . unit Sales : January 12 : 930 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