XYZ Co uses the periodic inventory system to account for inventories. Its beginning inventory is 500 units at 5 $ each. Information related to XYZ Company's inventory at October 31 is given below:

Alpha CO
Date	Explanation	Units	Units Cost	Total Cost
10/08	Purchase	800	$ 11
10/15	Purchase	600	$ 14
10/20	Purchase	300	$ 15
	Total goods available
During the year, 1400 units were sold.

Required:

1. Compute the cost of ending inventory and the cost of goods sold under:

a. FIFO method