P6. The followings are inventory transactions of Coyotes Co. during May.

Date	Explanations	# of units	Cost/unit	Total costs
5/1	Beginning inventory	500	$10	$5,000
5/5	Bought	900	$11	$9,900
5/15	Bought	1,000	$12	$12,000
5/20	Bought	1,300	$13	$16,900
	Goods available for sales	3,700		$43,800
5/31	Ending inventory	700
	Goods sold in May	3,000

Instructions: Compute costs of goods sold (COGS) for May using the following

methods.

1. Average method.
2. First In First Out method.
3. Last In First Out method.