Course: Operations Management DO NOT COPY OTHER RESOURCES TO ANSWER THIS QUESTION! MUST BE IN YOUR OWN WORK OR IN YOUR OWN WORDS! YOU MUST SHOW ALL WORK! 11.8 Mattress Wholesalers, Inc., is constantly trying to reduce inventory in its supply chain. Last year, cost of goods sold was $7.5 million and inventory was $1.5 million. This year, cost of goods sold is 58.6 million and inventory investment is $1.6 million a. What were the weeks of supply last year? b. What are the weeks of supply this year? c. Is Mattress Wholesalers making progress in its inventory-reduction effort