need help for periodic inventory system

Peciodic Imentory System 4. (To record sales) (To record cost of goods sold) 5. Ayayai Limited had the illowing balances and transactions during the current year. 1. Beginning inventory 2. Purchases 3. Defective units returned to the supplier 4. Sales 5. Ending inventory 90 units at $3=$270 880 units at $3=$2,640 20 units at $3=$60 480 units at $12$5,760 470 units at $3=$1,410 How would the journal entries be recorded under each system? (Credit account titles are automatically indented when the am entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter O for the amounts. List all before credit entries.)