Tyler Company has the following information related to purchases and sales of one of its inventory items.

Date	Description	Units Purchased at Cost	Units Sold at Retail
Sept. 1	Beginning inventory	400 units @ $20
10	Purchase	600 units @ $22
20	Sales		670 units @ $37
25	Purchase	1,000 units at $23

Assume Tyler uses a perpetual inventory system.

Required:

Calculate ending inventory and cost of goods sold using the FIFO, LIFO, and average cost methods.