(Computing amounts for the GAAP inventory methods—periodic system) Suppose Intel Corporation’s inventory records for a particular computer chip indicate the following at October 31:

Oct. 1

Beginning inventory

5 units @ $160

=

$ 800

8

Purchase

4 units @ 160

=

640

15

Purchase

11 units @ 170

=

1,870

26

Purchase

5 units @ 180

=

900

The physical count of inventory at October 31 indicates that 8 units of inventory are on hand.

Required

Compute ending inventory and cost of goods sold, using each of the following methods. Round all amounts to the nearest dollar:

1. Specific unit cost, assuming four $160 units

2. Average cost

3. First in, first out and four $170 units are on hand

4. Last in, first out