The cost of goods sold for 2015 is $19,500.
The cost of goods sold is the cost of the inventories that was sold by a company in a given period. It can be determined by subtracting the ending inventory from the sum of beginning inventory and purchases.
Cost of goods sold = (beginning inventory + purchases) - ending inventory
($6,500 + $21,500) - $8500
$28,000 - $8,500
= $19,500
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