Three identical units of merchandise were purchased during May, as follows

Three identical units of merchandise were purchased during May, as follows: Units May 3 Total Purchase Purchase Purchase Cost $130 136 142 $408 Assume that two units are sold on May 23 for $313 total. Determine the gross profit for May and ending inventory on May 31 using (a) FIFO, (b) LIFO, and (c) weighted average cost methods. Gross Profit Ending Inventory b. First-in, first-out (FIFO) Last-in, first-out (LIFO) Weighted average cost