20. Effe Company uses a periodic inventory system. Details for the inventory account for the month of January, 2014 are as follows: (SHOW CALCULATIONS for full credit Units Per unit price Tota! Balance, 1/1/14 200 $5.00 $1,000 Purchase, 1/15/14 100 5.30 530 Purchase, 1/28/14 100 5.50 550 An end of the month (1/31/14) inventory showed that 160 units were on hand. If the company uses FIFO, what is the value of the ending inventory? a $800 b. 5832 C. $848 d. $868 21. For companies that use a perpetual inventory system, all of the following are purposes for taking a physical inventory except