Problem 3) (12 points) U.S. Airfilter 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 1 Quarter 2 Quarter 3 Quarter 4 (January through (April (July through (October through March) through June) September) December) Sales (total quarter): United States Canada Europe 325 75 30 400 60 33 425 85 25 375 70 15 300 325 360 350 60 40 65 60 Cost of goods sold (total quarter) Raw materials at the Louisville plant (end-of-quarter) Work-in-process and finished goods at the Louisville plant (end-of-quarter) Distribution center inventory (end-of-quarter): United States Canada Europe 120 125 135 150 30 15 5 30 11 4 27 15 8 30 16 5 All amounts in millions of U.S. dollars. a) What is the average inventory turnover (quarterly and yearly) for the firm? (10 points) b) If you were given the assignment to increase inventory turnover, what would you focus on? Why? (2 points)