Metlock, Inc. is a retailer operating in Calgary, Alberta. Metlock uses the perpetual inventory method. Assume that there are no credit transactions; all amounts are settled in cash. You are provided with the following information for Metlock for the month of January 2022.

Date	Description	quantity	unit cost or selling price
Dec. 31	Ending Inventory	160	20
Jan. 2	Purchase	96	22
Jan. 6	Sale	180	39
Jan. 9	Purchase	76	24
Jan. 10	Sale	56	45
Jan. 23	Purchase	114	25
Jan. 30	Sale	140	48

Calculate average cost for each unit. (Round answers to 3 decimal places, e.g. 5.125.)