Cheyenne Corp. uses the periodic inventory system and had 160 units in beginning inventory at a total cost of $20,000. The company purchased 320 units at a total cost of $49,600. At the end of the year, Cheyenne had 85 units in ending inventory.

(a) Compute the cost of the ending inventory and the cost of goods sold under FIFO, LIFO, and average-cost.