Answer and Explanation:
The computation is shown below;
a. The total product cost is Â
Raw materials purchased and used  $6,200
Wages of production workers $7,400
 Depreciation on manufacturing equipment $4,400
Total Product Cost  $18,000
b. The total cost of the Inventory is Â
Units Completed = 3,000 units Â
Units Sold = 2,400 units Â
SO, the Units in ending inventory units is 600 units
Now the  Total cost of the Inventory is
= $18,000 Ă— [600 Ă· 3,000 ]
= $3600
c. The total cost of goods sold is Â
= $18,000 Ă— [2,400 Ă· 3,000 ]
= $14,400