Units	Unit Cost	Total Cost
Beginning Inventory	1-Jan	1,000	$20	$20,000
Purchase:	15-Apr	1,800	$22	$39,600
	30-Jun	800	$22	$17,600
	15-Aug	400	$24	$9,600
	20-Oct	1,200	$23	$27,600
	5-Dec	2,500	$21	$52,500
Total		7,700		166,900
During the current year, Chen sold		6,180	units.

At the beginning of the current year, Jan. 1, Chen, Inc. carried 1,000 units of its product with a unit cost of $20.
A summary of Chen's Inventory account is presented below:

1. Calculate Cost of Goods Sold using LIFO.

2. Calculate Cost of Goods Sold using the weighted average cost method.