The Carry-on Luggage Company must set up an assembly line for a wheeled carry-on bag. Forecasts show that 60 units per hour should be produced. The tasks required, task times, and precedence relationships are as follows:
|
Task
|
Time (seconds)
|
Predecessors
|
|
A
|
30
|
-
|
|
B
|
50
|
A
|
|
C
|
25
|
A
|
|
D
|
10
|
B
|
|
E
|
25
|
B
|
|
F
|
15
|
B
|
|
G
|
10
|
C, E, F
|
|
H
|
30
|
D, G
|
a. Draw the precedence diagram.
b. What is the takt time?
c. What is the theoretical number of workstations?
d. Assign the tasks to the workstations to balance the line using the longest operat- ing time rule.
e. What is the efficiency of the balanced line?