At the beginning of January 1, Tristan Company has 2,000 inventories costing P20 per unit. The following chronological transactions transpired during the year: 1) Purchased on account 3,000 units of inventory at P25 per unit 2) Sold 2,500 units of inventory on account for P50 per unit 3) Purchased 4,000 units of inventory at P24 per unit 4) Purchased 2,000 units of inventory at P30 per unit 5) Sold 3,000 units of inventory for P50 per unit. It was revealed that only 4,000 units were on hand during the count.

Prepare the journal using perpetual and periodic inventory system.