Lisa Company had 144 units in beginning inventory at a total cost of $16,560

Lisa Company had 144 units in beginning inventory at a total cost of $16,560. The company purchased 288 units at a total cost of $44,640. At the end of the year, Lisa had 115 units in ending inventory. I'm having trouble with this problem concerning Compute the cost of the ending inventory and the cost of goods sold under FIFO, LIFO, and average-cost