Current Attempt in Progress Swifty Company uses a periodic inventory system. For April, when the company sold 420 units, the following information is available Total Cost Unit Cost $13 April 1 inventory April 15 purchase April 23 purchase Units 240 440 320 1,000 16 $3,120 7,040 5,440 $15,600 17 Compute the April 30 inventory and the April cost of goods sold using the FIFO method. Ending Inventory Cost of goods sold $