Cullumber Company uses a periodic inventory system. Its records show the following for the month of May, in which 68 units were sold.

				Units			Unit Cost			Total Cost
May 1		Inventory		32			$8			$256
15		Purchases		26			11			286
24		Purchases		37			12			444
		Totals		95						$986

Compute the ending inventory at May 31 and cost of goods sold using the FIFO, LIFO, and average-cost methods.