During July 2014,Micanopy, Inc., sold 500 units of its product Empire for $8,000. the following units were available:

	Units	Cost
Beginning inventory	200	$ 2
Purchase 1	80	4
Purchase 2	120	6
Purchase 3	300	9
Purchase 4	180	12

A sale of 500 units was made after purchase 3. Of the units sold 200 came from beginning inventory and 300 came from purchase 3.

determine cost of goods avaliable for sale and ending invetory in units. Then determine the costs that should be assigned to cost of goods sold and ending inventory under each of the following assumptions. (for each alternative, show the gross margin. Round unit costs to cents and totals to dollars.)

1. Costs are assigned under the periodic inventory system using (a) the specific idenification method, (b) the average-cost method, (c) the FIFO method, and (d) the LIFO method.

2. Costs are assigned under the perpetual inventory system using (a) the average-cost method, (b) the FIFO method, and (c) the LIFO method.