A manager wants to assign tasks to workstations to achieve an hourly output rate of 33 units. Assume that the shop works 60 minutes per hour (ie, no breaks). a. Assign the tasks shown in the above precedence network (times are on the nodes and are in minutes) to workstations using the following heuristic rules: (i) "Assign the task with the most followers." (ii) Tiebreaker: "Assign the task with the longest time." (Round the intermediate calculations and final answers to 2 decimal places.) b. What is the efficiency? (Round the intermediate calculations to 2 decimal places. Round the final answer to 1 decimal place.) Efficiency %