Periodic Inventory Using FIFO, UFO, and weighted Average Cost Methods The units of an item available for sale during the year were as follows: Jan. 1 Inventory 7 units at $47 $329 Aug. 13 Purchase 7 units at $48 336 Nov. 30 Purchase 17 units at $50 850 Available for sale 31 units $1,515 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 (FIFO) method; (b) last-in, first-out (LIFO) 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, first-out (FIFO) b. Last-in, first-out (LIFO) a. C. c Weighted average cost