Compute the efficiency and percent idle time for system

Question

Assignment:

Intro- Supply Chain Management

Problem: Line Balancing

Your product has the following tasks and predecessors.

Task      Predecessor        Average Time (sec)

A            none                        40

B            none                        60

C               B                         30

D               C                         30

E              A, D                       30

F                 E                        30

1- Use a takt time of 120 seconds and follow the "most following tasks" heuristic rule to assign these tasks to the work stations. Show which tasks are assigned to each workstation.

2- Compute the efficiency and percent idle time for the system.