Question
Use the following table to answer the following question Activity Immediate Predecessor Time ES EF LS...
- Use the following table to answer the following question
|
Activity |
Immediate Predecessor |
Time |
ES |
EF |
LS |
LF |
|
A |
- |
4 |
0 |
4 |
6 |
10 |
|
B |
- |
5 |
0 |
5 |
0 |
5 |
|
C |
A |
3 |
4 |
7 |
10 |
13 |
|
D |
B |
8 |
5 |
13 |
5 |
13 |
|
E |
B |
2 |
5 |
7 |
16 |
18 |
|
F |
C, D |
3 |
13 |
16 |
15 |
18 |
|
G |
C, D |
7 |
13 |
20 |
13 |
20 |
|
H |
E, F |
2 |
16 |
18 |
18 |
20 |
How long can activity C be delayed without delaying the completion of the project?
|
6 |
||
|
16 |
||
|
11 18 |
||
|
not enough information |
Homework Answers
Answer #1
The answer is 6.
The calculations are:
| Activity | Time | Pred 1 | Pred 2 |
| A | 4 | ||
| B | 5 | ||
| C | 3 | A | |
| D | 8 | B | |
| E | 2 | B | |
| F | 3 | C | D |
| G | 7 | C | D |
| H | 2 | E | F |
| Results | |||||
| Activity | Early Start | Early Finish | Late Start | Late Finish | Slack |
| A | 0 | 4 | 6 | 10 | 6 |
| B | 0 | 5 | 0 | 5 | 0 |
| C | 4 | 7 | 10 | 13 | 6 |
| D | 5 | 13 | 5 | 13 | 0 |
| E | 5 | 7 | 16 | 18 | 11 |
| F | 13 | 16 | 15 | 18 | 2 |
| G | 13 | 20 | 13 | 20 | 0 |
| H | 16 | 18 | 18 | 20 | 2 |
| Project | 20 |
The slack for C is 6.
The Gantt chart is:
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