The correct option is $30. So the cost of goods sold using the FIFO method is $30
Beginning inventory:
Number of items: 4 items
Cost of each item = $10 per unit
Purchased inventory:
Number of items purchased = 3 items
Cost of each item = $11 per unit
Now, the 3 items were sold using the first-in,first-out method, so the items will be sold from the beginning inventory. In the FIFO method the items which are purchased earlier are sold first, following the items purchased after that:
Computing the cost of goods sold:
COGS = 3*10 = $30
So, the cost of goods sold is $30
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