The following Table 1 contains a list of activities, with precedence requirements and crashcosts. All start and finish times and crash costs are on a per-week basis.Table 1Activity PredecessorCrash Time Normal Cost(Weeks)Normal TimeCrash Cost(Weeks)$A10720002600A1215002000CA16122200300D8725003000EC131019502275FD9.88001000GE, F242936504000HG171412001800a) Determine the project cost and duration without crashing.b) Determine the least expensive project cost if the duration is to be 10% shorter thannormal project duration.c) Determine the least expensive project cost if the duration is to be 20% shorter thannormal project duration.

The network diagram is shown below

The following Table 1 contains a list of activities, with precedence requirements and crash costs. All start and finish times and crash costs are on a per-week basis. Table 1 Activity Predecessor Normal Time Crash Time Normal Cost Crash Cost (Weeks) (Weeks) A 10 7 2000 2600 B A 12 8 1500 2000 A 16 12 2200 3000 D B 8 7 2500 3000 E 13 10 1950 2275 F D 9. 8 800 1000 G E, F 24 29 3650 4000 H G 17 14 1200 1800 a) Determine the project cost and duration without crashing. b) Determine the least expensive project cost if the duration is to be 10% shorter than normal project duration. c) Determine the least expensive project cost if the duration is to be 20% shorter than normal project duration.

The following Table 1 contains a list of activities, with precedence requirements and crash costs. All start and finish times and crash costs are on a per-week basis. Table 1 Activity Predecessor Normal Time Crash Time Normal Cost Crash Cost (Weeks) (Weeks) A 10 7 2000 2600 B A 12 8 1500 2000 A 16 12 2200 3000 D B 8 7 2500 3000 E 13 10 1950 2275 F D 9. 8 800 1000 G E, F 24 29 3650 4000 H G 17 14 1200 1800 a) Determine the project cost and duration without crashing. b) Determine the least expensive project cost if the duration is to be 10% shorter than normal project duration. c) Determine the least expensive project cost if the duration is to be 20% shorter than normal project duration.

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Question

The following Table 1 contains a list of activities, with precedence requirements and crash
costs. All start and finish times and crash costs are on a per-week basis.
Table 1
Activity Predecessor
Crash Time Normal Cost
(Weeks)
Normal Time
Crash Cost
(Weeks)
$
A
10
7
2000
2600
A
12
1500
2000
C
A
16
12
2200
300
D
8
7
2500
3000
E
C
13
10
1950
2275
F
D
9.
8
800
1000
G
E, F
24
29
3650
4000
H
G
17
14
1200
1800
a) Determine the project cost and duration without crashing.
b) Determine the least expensive project cost if the duration is to be 10% shorter than
normal project duration.
c) Determine the least expensive project cost if the duration is to be 20% shorter than
normal project duration.

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