Problem 6-3A (Part Level Submission) Sarasota Corp. had a beginning inventory of 90 units of Product RST at a cost of $9 per unit. During the year, purchases were: Feb. 20 620 units at $10 Aug. 12 429 units at $12 May 5 510 units at $11 c. 8 96 units at $13 Sarasota Corp. uses a periodic inventory system. Sales totaled 1,420 units. (a) Your answer has been saved and sent for grading. See Gradebook for score details. (a) Determine the cost of goods available for sale. The cost of goods available for sale (b) Calclate Average Cost. (Round answer to 3 decimal places, e.g. 5.125.) Average Cost 19,016 10.897