6 and 7 required

t u t V W 5. Given the following line balance data in the table below: Task Predecessor Time (seconds) none 15 14 t 7 u 6 X V 8 8 W, X 10 Z 21 For eight hours of operating time per day and a desired output rate of 960 units per day, what is the minimum number of stations needed to achieve the appropriate cycle time? A. 4 B. 3 C. 2 D. 5 5 E. 6 t V WV u 6. Given the following line balance data in the table below. Task Predecessor Time (seconds) none 15 u t t 14 t 7 6 V 8 W, X 10 z y 21 For eight hours of operating time per day and a desired output rate of 960 units per day, what is the percentage of idle time which assign tasks in order of most following tasks. A. 20% B. 30% C. 40% D. 10% E. 50% u 7. Given the following line balance data in the table below. Task Predecessor Time (seconds) t none 15 t 14 V t 7 W u 6 V 8 W.X 10 21 y Z For eight hours of operating time per day and a desired output rate of 960 units per day, what is the efficiency for the balance which uses the minimum number of stations? A. 50% B. 60% C. 70% D. 80% E. 90%