Periodic Inventory by Three Methods

The units of an item available for sale during the year were as follows:

Jan. 1	Inventory	1,000	units at $15
Feb. 17	Purchase	1,375	units at $16
July 21	Purchase	1,500	units at $17
Nov. 23	Purchase	1,125	units at $18

There are 1,100 units of the item in the physical inventory at December 31. The periodic inventory system is used.

a. Determine the inventory cost by the first-in, first-out method. $

b. Determine the inventory cost by the last-in, first-out method. $

c. Determine the inventory cost by the weighted average cost method. $