Need help in this exercise. Part A, B and then the ending inventory and the cost of goods. Thanks

Problem 6- 2A Buffalo Industries markets CDs of numerous performing artists. At the beginning of March, Buffalo Industries had in beginning inventory 2,670 CDs with a unit cost of $7. During March, Buffalo Industries made the following purchases of CDs. Marchs 2,040 @ $8 March21 5,150 @ $10 March 13 3,820 @ $9 March26 1,930 @ $11 During March 12,440 unils were sold. Buffalo Industries uses a periodic inventory system. (a) Determine the cost of goods available for sale. The cost of goods available for sale s| l (h) Calculate Average Cost. (Round answer to 3 decimal places, e.g. 5.125.) Avera e Cost I 9 $l l Determine (1) the ending inventory and (2) the cost of goods sold under each of the assumed cost ow methods (FIFO, LIFO, and average-cost). (Round answers to 0 decimal places, 19.9. 125.) FIFO LIFO AVERAGE-COST The ending inventory $' ' $' ' $' ' l The costofgoods sold $'W if\" 7' A W ' J 7 77 l