Aenodic inveritory by three methods; catt of goods wold The urits of an item available for sale during the year were as follows. There are 80 units of the item in the ptivucal imventory at December a1. The periodic invertory system is used Deterinine the ending ifieentory. cost and the cost of goods sola by three methods. Round interim culculsticos to one deomal and final antwers to the ntares whole dollar