need help with the blank boxes!!!

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 Dc. 96 units at $13 Sarasota Corp. uses a periodic inventory system. Sales totaled 1,420 units. (a) Your answer is correct. (a) Determine the cost of goods available for sale. The cost of goods available for sale (b) Calculate Average Cost. (Round answer to 3 decimal places, e.g. 5.125.) Average Cost 19016 10.897 SHOW LIST OF ACCOUNTS SHOW SOLUTION SHOW ANSWER LINK TO TEXT VIDEO: SIMILAR