Answer:
The Cost of Goods Sold for the month is $3780.
Explanation:
closing inventory = 5 units
opening inventory = 3 units
purchases during the month = 20 units
units sold during the month = opening inventory + purchases during the month - closing inventory
                        = 3 + 20 - 5
                        = 18 units
cost of goods sold = 18*$210
                = $3780
Therefore, The Cost of Goods Sold for the month is $3780.