Laker Company reported the following January purchases and sales data for its only product.

Date		Activities	Units Acquired at Cost								Units sold at Retail
Jan.	1	Beginning inventory	140	units	@	$	6.00	=	$	840
Jan.	10	Sales										100	units	@	$	15
Jan.	20	Purchase	60	units	@	$	5.00	=		300
Jan.	25	Sales										80	units	@	$	15
Jan.	30	Purchase	180	units	@	$	4.50	=		810
		Totals	380	units					$	1,950		180	units

The Company uses a perpetual inventory system. For specific identification, ending inventory consists of 200 units, where 180 are from the January 30 purchase, 5 are from the January 20 purchase, and 15 are from beginning inventory.

Required: 1. Complete the table to determine the cost assigned to ending inventory and cost of goods sold using specific identification. 2. Determine the cost assigned to ending inventory and to cost of goods sold using weighted average. 3. Determine the cost assigned to ending inventory and to cost of goods sold using FIFO. 4. Determine the cost assigned to ending inventory and to cost of goods sold using LIFO.