The typical monthly production mox at Bangor Industries is as follows: Deixe models 50% Regular models 35% Economy models 15% Each deluxe model typically requires 11 hours of labor and 9 hours of machine time. Each regular model takes 10 hours of labor and 6 hours of machine time Finally, the economy model needs, on averago, 8.5 hours of labor and 5 hours of machine time a. The weighted per-unit planning value for machine hours is (Enter your response rounded to two decimal places) The weighted per-unit planning value for labor hours (Enter your response rounded to two decimal places) is b. Suppose that for the next month the mix is expected to change to 25% deluxe, 40% regular, and 35% economy models The new weighted per und planning value for machine hours is (Enter your response rounded to two decimal places) The new weighted per unt planning value for labor hours is (Enter your response rounded to two decimal places) c. When the product mix changes from month to month, Bangor Industries should use a approach to sales and operations planning