Ex-6. A tire retailer expects the following sales of tires for the first three months of the year: Month Standard Radial January February March 60 80 50 80 40 30 The store's policy is to maintain an ending inventory each month of 40% of next month's budgeted sales. Expected January 1 inventories are 15 for the Standard tires and 20 for the radial tires. The standard tires cost $30 and radial tires cost $50 each. 104 105 106 107 Required: Prepare a monthly purchases budget for January and February for the tires, identifying both quantities and costs