You are provided with the following information for Koetteritz Inc. for the month ended June 30, 2017. Koetteritz uses the periodic method for inventory.

Date	Description	Quantity	Unit Cost or Selling Price
June	1	Beginning inventory	42	$40
June	4	Purchase	139	43
June	10	Sale	112	73
June	11	Sale return	14	73
June	18	Purchase	55	46
June	18	Purchase return	9	46
June	25	Sale	68	79
June	28	Purchase	30	49

Weighted-average cost per unit?

Calculate ending inventory, cost of goods sold, gross profit under each of the following methods. (1) LIFO. (2) FIFO. (3) Average-cost.

Calculate gross profit rate under each of the following methods. (1) LIFO. (2) FIFO. (3) Average-cost.