Periodic Inventory Using FIFO, LIFO, and Weighted Average Cost Methods

The units of an item available for sale during the year were as follows:
Jan. 1 Inventory 8 units at $33 $264
Aug. 7 Purchase 18 units at $35 630
Dec. 11 Purchase 15 units at $37 555
41 units $1,449

There are 16 units of the item in the physical inventory at December 31. The periodic inventory system is used. Determine the inventory cost using (a) the first-in, first-out (FIFO) method; (b) the last-in, first-out (LIFO) method; and (c) the weighted average cost method (round per unit cost to two decimal places and your final answer to the nearest whole dollar).
a. First-in, first-out (FIFO) $
b. Last-in, first-out (LIFO) $
c. Weighted average cost $

LIFO ending inventory $   544.00

Weighted average:      $    565.44‬

FIFO ending invetory:  $   590.00

Explanation:

weighted-average:

1,449 / 41 = 35,34

Ending Inventory

16 x 35.34

LIFo we pick the first 16 units as the latest were sold:

8 units at $ 33  =  $ 264

8 units at $ 35  =  $ 280

Total ending inventory $ 544

FIFo we pick the last as the first one are the first being sold

15 units at 37 = 555

1 unit at 35 =       35

total ending      590

a) FIFO

Inventory = $590

b) LIFO

Inventory =  $544

C) WAM

Inventory = $565,46 = $565

Explanation:

a) FIFO

Inventory = $555 +$ 35 = $590

Dec purchase = $555

Aug 7 = $35

b) LIFO

Inventory = 280 +264 = $544

Jan  = $264

AUG = 8 * $35 = $280

C) WAM

Inventory

WAM = $1449/41 = $35,34 *16 = $565,46

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