3. The following table provides tasks on an assembly line, along with their predecessors and task times.

Immediate

Task Predecessor Time (seconds)

A None 45

B None 30

C A, B 48

D B 20

E C 10

F D, E 20

G E 40

The desired output is 75 units per hour, thus the cycle time is 48 seconds.

1. Draw the network diagram.
2. Balance the line (assign all tasks) using the longest task time rule.
3. Calculate the efficiency.