The following information is taken from the inventory records of the CNB Company for the month of September:

Beginning inventory, 9/1/2021	6,300	units @ $11.00
Purchases:
9/7	4,200	units @ $11.60
9/25	10,500	units @ $12.20
Sales:
9/10	5,000	units
9/29	6,000	units
10,000 units were on hand at the end of September.

Required: 1. Assuming that CNB uses a periodic inventory system and employs the average cost method, determine cost of goods sold for September and September's ending inventory. 2. Assuming that CNB uses a perpetual inventory system and employs the average cost method, determine cost of goods sold for September and September's ending inventory.