Accounting help, please.

Ferris Company began 2016 with 5.000 units of its principal product. The cost each unit is $6. Merchandise transactions for the month of January 2016 are as follows: Includes purchase price and cost of freight. 8.000 units were on hand at the end of the month. Required: Calculate January's ending inventory and cost of goods cold the month using each of the following alternatives: FIFO PERIODIC SYSTEM LIFO PERIODIC SYSTEM LIFO PERPETUAL SYSTEM AVERAGE COST. PERIODIC SYSTEM AVERAGE COST PERPETUAL SYSTEM