The units of an item available for sale during the year were asfollows:
Jan.1 Inventory 18 units at $40
Feb.26 Purchase 36 units at $46
June18 Purchase 42 units at $52
Dec.29 Purchase 24 units at $55
There are 33 units of the item in the physical inventoryat December 31. The periodic inventory system isused. Determine the inventory cost by (a) the first-in,first-out method, (b) the last-in, first-out method, and (c) theaverage cost method.