Please use the table below to answer the following questions: 1) List all the ta
ID: 468512 • Letter: P
Question
Please use the table below to answer the following questions:
1) List all the tasks that are on the critical path. Which tasks are on the critical path?
2) Find the total time to complete the project (In days).
3) What is the slack or float of task “D”?
4) If you increased Task D’s duration from 4 days to 5 days, what effect will this have on the project?
Task
Preceding Task
Duration
Start
N/A
0 days
F
Start
6 days
A
Start
10 days
B
F
10 days
E
B,A
5 days
D
B
4 days
End
D,E
0 days
Task
Preceding Task
Duration
Start
N/A
0 days
F
Start
6 days
A
Start
10 days
B
F
10 days
E
B,A
5 days
D
B
4 days
End
D,E
0 days
Explanation / Answer
Calculating duration of each path Start - F - B - D - End = 20 days Start - F - B - E - End = 21 days Start - A - E - End = 15 days Network path with longest total duration is the critical path Hence, critical path is: Start - F - B - E - End = 21 days The tasks on the critical path are F, B and E The total time to complete the project is 21 days The slack or float of Task D is 1 day The critical path is Start - F - B - E - End = 21 days The second longest path is Start - F - B - D - End = 20 days Hence slack is 21 - 20 = 1 day If Task D's duration goes to 5 days then; Start - F - B - D - End = 21 days The above also becomes the critical path