5 BE8-5 Amsterdam Company uses a periodic inventory system. For April, when the company sold 600 units, the following information is available. April 1 inventory April 15 purchase April 23 purchase Units 250 400 350 1,000 Unit Cost $10 12 13 Total Cost $ 2,500 4,800 4,550 $11,850 Compute the April 30 inventory and the April cost of goods sold using the average-cost method