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28) Lower agility
It is the disadvantage of supply chain
29) Gantt chart is as below:
Light Yellow = Job 1
Green = Job 2
Dark Yellow = Job 3
HOURS | |||||||||||||||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | |
Machine 1 | |||||||||||||||||||||
Machine 2 | |||||||||||||||||||||
Machine 3 |
Makespan is 12 as per above table which is the time when all activities are completed
30) Total free time till make span of 12 = Machine A free time + Machine B free time + Machine C free time = 5+3+4 = 12
Ans 12