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Practical Management Science
6th Edition
ISBN: 9781337406659
Author: WINSTON, Wayne L.
Publisher: Cengage,
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
Transcribed Image Text:... 3.16 The Rover 6 is a new custom-designed sports car. An
analysis of the task of building the Rover 6 reveals the following
list of relevant activities, their immediate predecessors, and their
duration:2
JOB
LETTER
IMMEDIATE
PREDECESSOR(S) TIME (DAYS)
NORMAL
DESCRIPTION
A
Start
B
Design
A
8
Order special accessories
B
0.1
D
Build frame
1
E
Build doors
1
F
Attach axles, wheels,
gas tank
D
Build body shellI
В
2
Build transmission and
drivetrain
H
В
3
Fit doors to body shell
G, E
1
J
Build engine
В
4
K
Bench-test engine
2
Assemble chassis
F, Н, К
1
M
Road-test chassis
L
0.5
N
Paint body
2
Install wiring
1
P
Install interior
1.5
Accept delivery of
special accessories
Mount body and
accessories on chassis
М, О, Р, Q
R
1
Road test car
R
0.5
Attach exterior trim
1
U
Finish
a) Draw a network diagram for the project.
b) Mark the critical path and state its length.
c) If the Rover 6 had to be completed 2 days earlier, would it
help to:
i) Buy preassembled transmissions and drivetrains?
ii) Install robots to halve engine-building time?
iii) Speed delivery of special accessories by 3 days?
d) How might resources be borrowed from activities on the non-
critical path to speed activities on the critical path? Px
z z u
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