Answer:
WA 1,682
LIFO 910
FIFO 2,260
Step-by-step explanation:
![\left[\begin{array}{cccc}Date&Cost&Units&Subtotal\\$Jan 20th&8&400&3200\\$April 21th&10&200&2000\\$July 25th&13&280&3640\\$Sept 19th&15&90&1350\\$Total&10.51&970&10190\\\end{array}\right]](https://img.qammunity.org/2020/formulas/business/college/i2dyevqjy9f2yfpy23ajljuopd3u7tvyk0.png)
We add the units purchase and the subtotal to get the total units available for sale.
Ending inventory physical units: 970 - 810 = 160 units
Then, we calculate for each method:
Weighted average:
cost of goods / available units = 10,190 / 970 = 10.51
160 units x 10.51 = 1,681.6
LIFO:
Ending inventory will be the oldest units:
160 units x 8 = 960
FIFO:
Ending inventory will be the newest units as the units are sold as soon as they come in
90 x 15 = 1,350
70 x 13 = 910
Total 2,260