The periodic inventory records of Flexon Prosthetics indicate the following at October 31:

Oct.1	Beginning inventory	9 units @ $60
8	Purchase	4 units @ 60
15	Purchase	10 units @ 70
26	Purchase	3 units @ 80

At October 31 Flexon counts 8 units of inventory on hand.

Requirements:

Compute ending inventory and cost of goods sold, using each of the following methods:

1. Average cost (round average unit cost to the nearest cent)

3. FIFO

4. LIFO