During 2020, Harmony Co. sold $528,000 of merchandise at marked retail prices. At the end of 2020, the following information was available from its records: Beginning inventory Net purchases At Cost At Retail $135,600 239,240 $264,800 401,600 Assume that in addition to estimating its ending inventory by the retail method, Harmony Co. also took a physical inventory at the marked selling prices of the Inventory Items at the end of 2020. Assume further that the total of this physical Inventory at marked selling prices was $110,000. a. Determine the amount of this inventory at cost. (Round your Intermediate calculations and final answer to 2 decimal places.) Inventory at cost b. Determine Harmony's 2020 Inventory shrinkage from breakage, theft, or other causes at retail and at cost. (Round your Intermediate calculations and final answers to 2 decimal places.) Estimated inventory that should have been on hand Physical inventory Inventory shrinkage At Cost At Retail