An assembly of an equipment involves the tasks A to N, the precedence tasks and processing times of these tasks in minutes are given in the following table. Considering cycle time of 20 minutes at any work station, balance the assembly line and find the optimum number of work stations. Also find the idle time at each work station.
|
Task
|
A
|
B
|
C
|
D
|
E
|
F
|
G
|
H
|
I
|
J
|
K
|
L
|
M
|
N
|
|
Predecessor
|
–
|
–
|
–
|
A
|
B
|
C
|
D
|
E
|
F
|
G
|
I
|
J, H
|
K
|
L,M
|
|
Duration
|
6
|
5
|
4
|
8
|
5
|
4
|
7
|
6
|
10
|
10
|
7
|
10
|
6
|
9
|