350 60 33 75 20 70 15 30 Excel Airf 340 4. The U.S. Airfilter company has hired you as a supply chain consultant. The company makes air filters for residential heating and air-conditioning systems. These filters are made in a single plant located in Louisville, Kentucky, in the United States. They are distributed to retailers through wholesale centers in 100 locations in the United States, Canada, and Europe. You have collected the following data relating to the value of inventory in the U.S. Airfilter supply chain: QUARTER QUARTER 2 QUARTER 3 QUARTER 4 JANUARY (APRIL JULY THROUGH (OCTOBER THROUGH THROUGH MARCH) THROUGH JUNE) SEPTEMBER) DECEMBER) Sales (total quarter): United States 300 405 375 Canada 75 Europe Cost of goods 280 295 350 sold (total quarter) Raw materials at 50 40 60 the Louisville plant (end-of-quarter) Work-in-process 100 105 150 and finished goods at the Louisville plant (end-of-quarter) Distribution center inventory (end-of-quarter) United States 25 27 Canada 15 16 Europe 4 5 All amounts in millions of US dollars. 55 120 30 11 10 5 a. What is the average inventory turnover for the firm? b. If you were given the assignment to increase inventory turnover, what would you focus on? Why? c. The company reported that it used S500M worth of raw material during the year. On aver- age, how many weeks of supply of raw material are on hand at the factory