Hull Companys record of transactions concerning part X for the month of April was as follows.
										Purchases				Sales
			Quantity:	Unit Cost:		Quantity:
Apr 1	(Balance on hand)		110	$26.00	Apr 5	290
Apr 4			420	26.20	Apr 12	200
Apr 11			280	26.30	Apr 27	310
Apr 18			210	26.40

Instructions:

(a) Compute the inventory at April 30 and the cost of goods sold during April on each of the following bases. Assume that periodic inventory records are kept. Carry unit costs to the nearest cent.

I want with steps explanation.