4. The following precedence network is used for assembling a product. You have been asked to achieve an output of 240 units per eight-hour day. All times in this network are in minutes. Balance the line using the following rule: assign tasks to workstations on the basis of most following tasks (Rule 1). Use greatest positional weight (Rule 2) as a tiebreaker. How many tasks were assigned to workstation 1? 0.2 0.4 0.2 1.2 b a d 3 1 O 4 2 O None of the provided options O 0.4 1.0 f g 2.0 12. The following precedence network is used for assembling a product. You have been asked to achieve an output of 240 units per eight-hour day. All times in this network are in minutes. Balance the line using the following rule: assign tasks to workstations on the basis of most following tasks (Rule 1). Use greatest positional weight (Rule 2) as a tiebreaker. What is the utilization (%) of the worker in the last workstation? 0.2 0.4 0.2 1.2 b a d O 60 O None of the provided options 67.5 O 100 O 50 30 O 40 O 0.4 1.0 e g 2.0