Answer:
Cost of goods sold
FIFO = $9,140
LIFO = $9,500
Weighted average Method = 9,259
Ending inventory
FIFO = $3,520
LIFO = $3,560
Weighted average Method = $3,800
Step-by-step explanation:
FIFO aims to sell the goods which arrived first, that means those that arrived later remain in inventory.
LIFO aims to sell the recent goods first, that means the older goods remain in inventory.
Weighted Average calculates a new average with each and every purchase made and cost of sales together with inventory balance are calculated from the recent average.
Cost of goods sold calculations
FIFO = 220 x $ 18 + 80 x $20 + 80 x $20 + 90 x $22 = $9,140
LIFO = 180 x $20 + 120 x $18 + 170 x $22 = $9,500
Weighted average Method = $18.90 x 300 + $21.11 x 170 = 9,259
Ending inventory calculations
FIFO = 160 x $22 = $3,520
LIFO = 100 x $18 + 80 x $22 = $3,560
Weighted average Method = $21.11 x 180 units = $3,800