7. An airline company must plan its fleet capacity and its long-term schedule of aircraft usage. For one flight segment, the average number of occupied seats by customers per day is 70 , which represents a 70 percent utilization rate of the seats assigned to the flight segment. Assume that management deems to keep the capacity utilization rate below 80 percent. If the average demand is expected to increase to 84 customers per day for this flight segment in three years, how many seats should be added to the capacity of the flight segment? 7. An airline company must plan its fleet capacity and its long-term schedule of aircraft usage. For one flight segment, the average number of occupied seats by customers per day is 70 , which represents a 70 percent utilization rate of the seats assigned to the flight segment. Assume that management deems to keep the capacity utilization rate below 80 percent. If the average demand is expected to increase to 84 customers per day for this flight segment in three years, how many seats should be added to the capacity of the flight segment