please I have only 20 minute

January1 balance,500 units@\$55\$27,500 Purchases: January10:500 units@\$60 January 20:1,000 units@\$63 Sales: January 12: 800 units January 28: 750 units Question 3: Shown below is activity for one of the products of Denver Office Equipment. The company uses a perpetual inventory system. a) Compute the ending inventory and cost of goods sold assuming Denver uses FIFO. (2 marks) b) Compute the ending inventory and cost of goods sold assuming Denver uses average cost. (2 marks)