Required information {The following information applies to the questions displayed below.) Ferris Company began January with 4,000 units of its principal product. The cost of each unit is $7. Merchandise transactions for the month of January are as follows: Purchases Unit Cost $ Date of Purchase Jan. 10 Jan. 18 Totals Units 3,000 4,000 7,000 Total Cost $24,000 36,000 60,000 * Includes purchase price and cost of freight Sales Date of Sale Jan. 5 Jan. 12 Jan. 20 Totii Units 2.000 1,000 3.000 6.000 5,000 units were on hand at the end of the month. 5. Calculate January's ending inventory and cost of goods sold for the month using Average cost, perpetual system. (Round average cost per unit to 4 decimal places. Enter sales with a negative sign.)