3. Beginning inventory, purchases, and sales for Product - Weld TM are as follows:

	Sep. 1	Beginning Inventory	24 units		@	$15
	Sep. 5	Sale	17 units
	Sep. 17	Purchase	10 units		@	$20
	Sep. 30	Sale	8 units

Assuming a perpetual inventory system and the first-in, first-out method, determine (a) the cost of the merchandise sold for the September 30 sale and (b) the inventory on September 30.

4. Beginning inventory, purchases, and sales for Product - Weld TM are as follows:

Sep. 1	Beginning Inventory	24 units		@	$10
Sep. 5	Sale	17 units
Sep. 17	Purchase	10 units		@	$15
Sep. 30	Sale	8 units

Assuming a perpetual inventory system and the last-in, first-out method, determine (a) the cost of the merchandise sold for the September 30 sale and (b) the inventory on September 30.