The accounting records of Concord Corporation show the following data.

Beginning inventory 2,890 units at $5

Purchases 7,880 units at $6

Sales 9,250units at $10

Determine cost of goods sold during the period under a periodic inventory system using the FIFO method.

Determine cost of goods sold during the period under a periodic inventory system using the LIFO method.

Determine cost of goods sold during the period under a periodic inventory system using the average-cost method.