the units of an item available for sale during the year were as follows Jan. 1 inventory 50 units@96 mar. 10 purchase 60 units @ 108 Aug. 30 purchase 20 units @ 114 Dec. 12 purchase 70 units @ 120 There are 80 units of the it in the physical inventory at December 31. the periodic inventory system is used. Determine the inventory cost and the cost of merchandise sold by three methods. round interim calculations to one decimal and final answers to the nearest whole dollar