Could I get some expert advice on how to solve part of this problem I am stuck on. Thanks!

Problem 6-02A a, b1-b2, c (Part Level Submission) (Video) Vaughn Distribution markets CDs of the performing artist Unique. At the beginning of October, Vaughn had in beginning inventory 2,000 of Unique's CDs with a unit cost of $5. During October, Vaughn made the following purchases of Unique's CDs. Oct. 3 2,500 @ $6 Oct. 9 3,500 @ $7 Oct. 19 3,000 @ $8 Oct. 25 4,000 @ $9 During October, 10,850 units were sold. Vaughn uses a periodic inventory system. (a) Your answer is correct. Determine the cost of goods available for sale. Cost of goods available for sale 109500 (61) your answer is correct. Calculate cost per unit. (Round answer to 2 decimal places, e.g. 2.25.) Cost per unit 7.30 Click if you would like to Show Work for this question: Open Show Work SHOW SOLUTIONSHOW ANSWER LINK TO TEXT (62) x Your answer is incorrect. Try again. Determine (1) the ending inventory and (2) the cost of goods sold under each of the assumed cost flow methods (FIFO, LIFO, and average-cost). (Round answers to 0 decimal places, e.g. 1,250.) FIFO LIFO AVERAGE-COST The ending inventory 4000 4000 4000 The cost of goods sold 73500 87500 80300 Click if you would like to show Work for this question: Open Show Work