Answer:
Cost of Goods sold is $29
Explanation:
Under the perpetual LIFO or Last In First Out method of inventory valuation, we value the Cost of Goods Sold based on the price of the most recently purchased inventory before sale. Thus the units of closing inventory contains the inventory that was purchased first.
The cost of goods sold under LIFO will be,
Beginning Inventory (9* 3) = 27
Feb purchases (4 * 5) = 20
Oct sales (4 * 5 + 3 * 3) = (29)
Dec purchases (5 * 6) = 30
Ending Inventory = 48
So, the cost of goods sold under perpetual LIFO will comprise of the most recently purchased inventory before sale. The most recently purchased inventory before October sale was of February purchases. Thus, out of the 7 units sold, 4 will comprise of the February purchases and the remaining, 3 units, will be from the beginning inventory.
The cost of goods sold is,
COGS = 4 * 5 + 3 * 3
COGS = 29