PT Andalan Utama is engaged in buying and selling electronic equipment. All transactions are made on credit and there are no damaged items for return transactions. Transactions related to inventory at PT Andalan Utama during December 2020 are as follows: 2/12/20 Purchase of merchandise 1,000 units @ $10; Terms 2/10;n/30 4/12/20 Paid cash on postage purchases $200 6/12/20 Purchased merchandise 1,200 units @$15; Terms 2/10;n/30 8/12/20 Send back 200 units of goods for purchase on 6/12/20 10/12/20 Selling merchandise 1,400 units @$25. COGS is known to be 80% of the selling price 11/12/20 Paying off debt on purchase on 2/12/20 15/12/20 Purchased merchandise 1,500 units @ 20; Terms 2/10;n/30 17/12/20 Selling 1000 units of goods @ 40 on condition 2/10;n/40. COGS is known to be 75% of the selling price 18/12/20 Paid cash freight on sale of goods on 17/12/20 for $400 19/12/20 Received back goods (sales returns) for transactions on 17/12/20 for 100 units. 26/12/20 Received settlement of receivables for sales on 17/12/20 with discount.

Required: Journalize the above transactions using the method: a. Perpetual b. Periodic