Table 3.8
$$\begin{array} { | c | c | c | }
\hline \text { Activity } & \begin{array} { c }
\text { Immediate } \
\text { Predecessor(s) }
\end{array} & \begin{array} { c }
\text { Time } \
\text { (weeks) }
\end{array} \
\hline \text { A } & \cdots & 3 \
\text { B } & \cdots & 4 \
\text { C } & A , B & 5 \
\text { D } & \text { A } & 6 \
\text { E } & \mathrm { C } & 4 \
\text { F } & \mathrm { D } , \mathrm { E } & 2 \
\hline
\end{array}$$
-Using Table 3.8,what is the slack for activity A?
A) 0 weeks
B) 1 week
C) 2 weeks
D) 3 or more weeks

Question

Table 3.8
 $$\begin{array} { | c | c | c | } 
\hline \text { Activity } & \begin{array} { c } 
\text { Immediate } \
\text { Predecessor(s) }
\end{array} & \begin{array} { c } 
\text { Time } \
\text { (weeks) }
\end{array} \
\hline \text { A } & \cdots & 3 \
\text { B } & \cdots & 4 \
\text { C } & A , B & 5 \
\text { D } & \text { A } & 6 \
\text { E } & \mathrm { C } & 4 \
\text { F } & \mathrm { D } , \mathrm { E } & 2 \
\hline
\end{array}$$
-Using Table 3.8,what is the slack for activity A?
A) 0 weeks
B) 1 week
C) 2 weeks
D) 3 or more weeks

Quizplus · Accepted Answer

To calculate slack for an activity, we need to subtract its duration from the difference between its latest start time and earliest start time.

For activity A, its earliest start time is 0 (since it has no predecessors), and its latest start time is 3 (since activity C, which has a duration of 5 weeks, is dependent on A and B). Therefore, slack for activity A is (3-3) = 0 weeks.

The best choice is B, with the explanation given above.

Table 38 -Using Table 3