Table 3.3
$$\begin{array} { | c | c | c | }
\hline \text { Activity } & \begin{array} { c }
\text { Immediate } \
\text { Predecessor(s) }
\end{array} & \begin{array} { c }
\text { Time } \
\text { (weeks) }
\end{array} \
\hline \text { A } & \cdots & 3 \
\text { B } & \cdots & 3 \
\text { C } & \cdots & 3 \
\text { D } & \text { B } & 4 \
\text { E } & \text { A,C } & 4 \
\text { F } & \text { B } & 4 \
\text { G } & & \
\text { H } & \text { E } & 5 \
\text { I } & \text { E } & 5 \
\hline
\end{array}$$
-Using Table 3.3,what is the minimum number of activities that would have to be delayed in order to cause an increase in the project's earliest completion date?
A) 1 activity
B) 2 activities
C) 3 activities
D) 4 or more activities

Question

Table 3.3
 $$\begin{array} { | c | c | c | } 
\hline \text { Activity } & \begin{array} { c } 
\text { Immediate } \
\text { Predecessor(s) }
\end{array} & \begin{array} { c } 
\text { Time } \
\text { (weeks) }
\end{array} \
\hline \text { A } & \cdots & 3 \
\text { B } & \cdots & 3 \
\text { C } & \cdots & 3 \
\text { D } & \text { B } & 4 \
\text { E } & \text { A,C } & 4 \
\text { F } & \text { B } & 4 \
\text { G } & & \
\text { H } & \text { E } & 5 \
\text { I } & \text { E } & 5 \
\hline
\end{array}$$
-Using Table 3.3,what is the minimum number of activities that would have to be delayed in order to cause an increase in the project's earliest completion date?
A) 1 activity
B) 2 activities
C) 3 activities
D) 4 or more activities

Quizplus · Accepted Answer

The critical path of the project is A-E-H-I, which has a total duration of 16 weeks. Therefore, any activity that is on the critical path would cause an increase in the project's earliest completion date if it is delayed. The only activity that is on the critical path and has no float (i.e., no slack time) is activity A. Therefore, delaying activity A by even one week would cause an increase in the project's earliest completion date. Hence, the minimum number of activities that would have to be delayed is one, and the answer is A.

Table 33 -Using Table 3