Answer:
a. FIFO
cost of ending inventory = $256
cost of goods sold = $402
b. LIFO
cost of ending inventory = $204
cost of goods sold = $454
c. Weighted average cost
cost of ending inventory = $225.60
cost of goods sold = $432.40
Step-by-step explanation:
Periodic method means cost of sales and inventory balance are determined at the end of the period.
Step 1 : Units Sold
Units Sold = Units available for Sale - Units in Inventory
= (12 + 38 + 20) - 24
= 46
Step 2 : FIFO
FIFO assumes that the units to arrive first, will be sold first.
cost of ending inventory = 20 x $11 + 4 x $9 = $256
cost of goods sold = 12 x $8 x 34 x $9 = $402
Step 3 : LIFO
LIFO assumes that the units to arrive last, will be sold first.
cost of ending inventory = 12 x $9 + 12 x $8 = $204
cost of goods sold = 20 x $11 x 26 x $9 = $454
Step 4 : Weighted average cost
Weighted average cost method calculates a new unit cost with every purchase made. this unit cost is then used to calculated cost of sale and ending inventory.
Unit Cost = Total Costs ÷ Units available for sale
= (12 x $8 + 38 x $9 + 20 x $11 ) ÷ (12 + 38 + 20)
= $9.40
cost of ending inventory = Units in Inventory x Unit Cost
= 24 x $9.40
= $225.60
cost of goods sold = Units Sold x Unit Cost
= 46 x $9.40
= $432.40