Problem 3C Pickles Products makes pizza ovens for commercial use. Tommy Pickles,
ID: 335300 • Letter: P
Question
Problem 3C
Pickles Products makes pizza ovens for commercial use. Tommy Pickles, CEO, is contemplating producing smaller ovens for use in high school and college kitchens. The activities necessary to build an experimental model and related data are given in the following table:
ACTIVITY
NORMAL TIME (WEEKS)
CRASH TIME (WEEKS)
NORMAL COST (S)
CRASH COST (S)
IMMEDIATE PREDECESSOR(S)
A
4
3
1,500
1,800
---
B
3
2
2,300
2,500
---
C
2
2
400
400
---
D
8
3
1,400
1,700
A
E
7
4
900
1,200
B
F
4
2
3,600
5,100
C
G
2
1
1,600
2,200
D, E
What is the project completion date?
Crash this project to 10 weeks at the least cost.
Crash this project to 8 weeks (which is the maximum it can be crashed) at the least cost.
ACTIVITY
NORMAL TIME (WEEKS)
CRASH TIME (WEEKS)
NORMAL COST (S)
CRASH COST (S)
IMMEDIATE PREDECESSOR(S)
A
4
3
1,500
1,800
---
B
3
2
2,300
2,500
---
C
2
2
400
400
---
D
8
3
1,400
1,700
A
E
7
4
900
1,200
B
F
4
2
3,600
5,100
C
G
2
1
1,600
2,200
D, E
Explanation / Answer
Critical path :-
AD G =14
BEG=12
CF = 6
Length of the project is equal to the critical path
A D G=14
Now 1 week D = 60
D = 7 weeks
ADG=13
2 week D= 60
D= 6
ADG=12
3week D =60
D= 5 ADG=11
4 week D = 60 D =4 ADG = 10
And so on
Least cost at the 10 weeks D A =60 = total crash cost / total crash time
Activities are crashed the critical path may change
Cost per week week to decrease 300 1 200 1 0 0 60 5 100 3 750 2 600 1Related Questions
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