As part of a major plant renovation project, the industrial engineering department has been asked to balance a revised assembly operation to achieve an output rate of240 units per eight- hour day. Task times and precedence relationships are as follows:

Do each of the following:
a. Draw the precedence network.
b. Determine tire required cycle time.
c. Determine the minimum number of workstations needed.
d. Assign the tasks to workstations using the heuristic rule “Assign the task with the most followers.” Use the heuristic rule “Assign the task with the longest time” as a tiebreaker, If a tie still exists, choose randomly,
e. Calculate the percentage idle time for the assignments in part d.