Periodic Inventory Using FIFO, LIFO, and Weighted Average Cont Methods The units of an item available for sale during the year were as follows: Jan. 1 Tnventory 17 units of $39 $663 Aug 13 Purchase 18 units at $42 756 Nov. 30 Purchase 16 units at 543 688 Available for sale 51 units $2,107 There are 15 units of the item in the physical inventory at December 31, The periodic inventory system is used. Determine the inventory cost using the (a) first-in, first-out (Firo) method in, first-out (LFD) method, and (c) weighted average cost method (round per unit cost to two decimal places and your final answer to the nearest whole dollar). First in hest-out (FIFO) Last in, first-out (FO) Weighted average cost