i. Use Johnson's Rule to set the sequence of processing the shipments through Quality Control. ii. How much total time is required to process all the six shipments through Quality Control? Show all times on a Gantt Chart.

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter4: Linear Programming Models
Section: Chapter Questions
Problem 111P
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b) A company receives parts from suppliers to be used in its manufacturing departments.
The quality control department must perform two operations when shipments are
received:
Operation A – draw a random sample, package, and deliver to testing; and
Operation B – test the materials and issue a disposition report.
There are currently six shipments waiting to be processed. The time estimates for
processing these six shipments through quality control are given in the table below.
Shipment
Operation A (hours)
Operation B (hours)
A
1.5
1.0
В
1.1
2.7
1.2
1.4
D
0.7
1.6
E
1.6
1.5
F
1.9
2.9
Use Johnson's Rule to set the sequence of processing the shipments through
Quality Control.
i.
ii.
How much total time is required to process all the six shipments through Quality
Control? Show all times on a Gantt Chart.
w lu
Transcribed Image Text:b) A company receives parts from suppliers to be used in its manufacturing departments. The quality control department must perform two operations when shipments are received: Operation A – draw a random sample, package, and deliver to testing; and Operation B – test the materials and issue a disposition report. There are currently six shipments waiting to be processed. The time estimates for processing these six shipments through quality control are given in the table below. Shipment Operation A (hours) Operation B (hours) A 1.5 1.0 В 1.1 2.7 1.2 1.4 D 0.7 1.6 E 1.6 1.5 F 1.9 2.9 Use Johnson's Rule to set the sequence of processing the shipments through Quality Control. i. ii. How much total time is required to process all the six shipments through Quality Control? Show all times on a Gantt Chart. w lu
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