In the beginning, the inventory had a value of $8320, then more inventory was purchased, for a total of
[tex]150+216+88=454.[/tex]
Therefore, the total cost of the inventory was $8320+$454=$8774, if the ending inventory was valued at $1720, the cost of goods sold over that period of time is
[tex]8774-1720=7054.[/tex]
Answer: $7054.
