Shown below is activity for one of the products of Denver Office Equipment:

January 1 balance, 600 units @ $50 $30,000

Purchases:

January 10: 600 units @ $55

January 20: 1,200 units @ $58

Sales:

January 12: 900 units

January 28: 800 units

Required:

Compute the January 31 ending inventory and cost of goods sold for January, assuming Denver uses average cost and a periodic inventory system