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Indigo Inc. uses a perpetual inventory system. Its records show the following for the month of May. Unit Cost Total Cost Date Explanation Units May 1 Inventory 30 $7. $210 May 15 Purchase 25 8 200 May 18 Sale (42 ) May 24 Purchase 41 9 369 Total 96 $779 Calculate the cost of goods sold for May and the ending inventory at May 31 using the average cost formula. (For average, use 3 decimal places, e.g. 15.235 in your calculations and round final answers to 2 decimal places, e.g 5.25.) Cost of goods sold $ Ending Inventory $ ta