Table 11-4
The following represents a project with known activity times.All times are in weeks.

-Using the data in Table 11-4, what is the latest possible time that C may be started without delaying completion of the project?
A)0
B)4
C)8
D)10

Question

Table 11-4
The following represents a project with known activity times.All times are in weeks.
 
-Using the data in Table 11-4, what is the latest possible time that C may be started without delaying completion of the project?
A)0 
B)4 
C)8 
D)10

Quizplus · Accepted Answer

To determine the latest possible time that C may be started without delaying completion of the project, we need to calculate the latest start time (LS) and the latest finish time (LF) for each activity.

Starting from the last activity (F), the LF is equal to its activity time (2). The LS for F is then calculated by subtracting its activity time from its LF (LS = LF - activity time = 2 - 2 = 0).

Moving to activity E, its LF is equal to the LS of F (LF = LS of F = 0). Its LS is then calculated by subtracting its activity time from its LF (LS = LF - activity time = 0 - 3 = -3). However, since we cannot start an activity before time 0, the LS of E is set to 0.

We repeat this process for D, C, B, and A, and we get the following table:

Activity | LF | LS 
-------- | -- | -- 
F        | 2  | 0 
E        | 0  | 0 
D        | 7  | 3 
C        | 11 | 8 
B        | 11 | 3 
A        | 15 | 5

Therefore, the latest possible time that C may be started without delaying completion of the project is 8 weeks (LS of C). The correct answer is (C).

Table 11-4 The Following Represents a Project with Known Activity Times.All Times