13. The following precedence network is used for assembling a product. You have been asked to achieve a daily output rate of 40 units. Assume one day is 8 hours. All times in this network are in minutes. Balance the line using the following rule: Assign tasks to workstations on the basis of greatest positional weight (Rule 2). Use most following tasks (Rule 1) as a tiebreaker. What is the utilization (%) of the worker in the last workstation? 60 6.0 60 20 70 50 120 a h 20 1.0 10 10. The following precedence network is used for assembling a product. You have been asked to achieve a daily output rate of 40 units. Assume one day is 8 hours. All times in this network are in minutes. Balance the line using the following rule: Assign tasks to workstations on the basis of greatest positional weight (Rule 2). Use most following tasks (Rule 1) as a tiebreaker. What is the first activity assigned to workstation 3? 60 6.0 60 b d 20 70 5.0 120 h 20 10 1.0