Table 3.10
You are responsible for managing a project with the following activities
(times are given in weeks).
$$\begin{array} { | c | c | c | c | c | }
\hline \text { Activity } & \begin{array} { c }
\text { Optimistic } \
\text { Time }
\end{array} & \begin{array} { c }
\text { Most Likely } \
\text { Time }
\end{array} & \begin{array} { c }
\text { Pessimistic } \
\text { Time }
\end{array} & \begin{array} { c }
\text { Immediate } \
\text { Predecessor(s) }
\end{array} \
\hline \text { A } & 2 & 5 & 14 & \cdots \
\text { B } & 8 & 11 & 14 & \cdots \
\text { C } & 5 & 7 & 9 & \text { A } \
\text { D } & 6 & 9 & 12 & \text { A } \
\text { E } & 1 & 3 & 5 & \text { D,B } \
\hline
\end{array}$$
-Using Table 3.10,if the expected time for activity B is changed to 18 weeks,by how many weeks will the project's expected completion time increase?
A) It will not change.
B) It will increase by 1 or 2 weeks.
C) It will increase by 3 or 4 weeks.
D) It will increase by more than 4 weeks.

Question

Table 3.10
You are responsible for managing a project with the following activities
(times are given in weeks).
 $$\begin{array} { | c | c | c | c | c | } 
\hline \text { Activity } & \begin{array} { c } 
\text { Optimistic } \
\text { Time }
\end{array} & \begin{array} { c } 
\text { Most Likely } \
\text { Time }
\end{array} & \begin{array} { c } 
\text { Pessimistic } \
\text { Time }
\end{array} & \begin{array} { c } 
\text { Immediate } \
\text { Predecessor(s) }
\end{array} \
\hline \text { A } & 2 & 5 & 14 & \cdots \
\text { B } & 8 & 11 & 14 & \cdots \
\text { C } & 5 & 7 & 9 & \text { A } \
\text { D } & 6 & 9 & 12 & \text { A } \
\text { E } & 1 & 3 & 5 & \text { D,B } \
\hline
\end{array}$$
-Using Table 3.10,if the expected time for activity B is changed to 18 weeks,by how many weeks will the project's expected completion time increase?
A) It will not change.
B) It will increase by 1 or 2 weeks.
C) It will increase by 3 or 4 weeks.
D) It will increase by more than 4 weeks.

Quizplus · Accepted Answer

By increasing the expected time for activity B from 14 to 18 weeks, we need to recalculate the expected times for all the activities that follow B. The expected time for activity E will increase from 3 to 5 weeks, as it is directly dependent on B. This will cause a delay in the completion time of the project, which will increase by the sum of the increase in the expected times for B and E, i.e., 4 weeks. Therefore, the project's expected completion time will increase by 3 or 4 weeks. Choice C is the closest option.

Table 310 You Are Responsible for Managing a Project with the the Following

Table 310
You Are Responsible for Managing a Project with the the Following