Salt and Mineral (SAM) began 2024 with 240 units of its one product. These units were purchased near the end of 2023 for $25 each. During the month of January, 120 units were purchased on January 8 for $28 each and another 240 units were purchased on January 19 for $30 each. Sales of 150 units and 125 units were made on January 10 and January 25, respectively. There were 325 units on hand at the end of the month. SAM uses a periodic inventory system.

Required:

1. Calculate ending inventory and cost of goods sold for January using FIFO.
2. Calculate ending inventory and cost of goods sold for January using average cost.