You are responsible for managing an advertising project with the following activities (times are given in weeks).
$\begin{array}{cccccc}&\text { Immediate } & \text { Normal Time } & \text { Crash Time } & \text { Normal } & \text { Crash } \
\text { Activity }&\text { Predecessor } & \text { (Weeks) } & \text { (Weeks) } & \text { Cost }(\$) & \text { Cost }(\$)\\hline
\text { A } & \text { none } & 3 & 2 & \$ 14,000 & \$ 16,500 \
\text { B } & \text { none } & 6 & 6 & \$ 5,500 & \$ 5,500 \
\text { C } & \text { none } & 2 & 1 & \$ 6,000 & \$ 8,000 \
\text { D } & \text { A, B } & 5 & 3 & \$ 7,500 & \$ 14,500 \
\text { E } & \text { C } & 2 & 1 & \$ 9,000 & \$ 10,500 \
\text { F } & \text { A } & 7 & 6 & \$ 15,000 & \$ 18,000 \
\text { G } & \text { D. E F } & 4 & 3 & \$ 8,400 & \$ 10,000
\end{array}$ Draw the project network here. BLANK SPACES
-If activity D is delayed by 2 weeks, which one of the following statements is TRUE?
A) There are now two critical paths in the network.
B) The slack time for activity D changes to 1 week.
C) The project completion time is still 14 weeks.
D) The project completion time becomes 18 weeks.

Question

You are responsible for managing an advertising project with the following activities (times are given in weeks).
 $\begin{array}{cccccc}&\text { Immediate } & \text { Normal Time } & \text { Crash Time } & \text { Normal } & \text { Crash } \
\text { Activity }&\text { Predecessor } & \text { (Weeks) } & \text { (Weeks) } & \text { Cost }(\$) & \text { Cost }(\$)\\hline
\text { A } & \text { none } & 3 & 2 & \$ 14,000 & \$ 16,500 \
\text { B } & \text { none } & 6 & 6 & \$ 5,500 & \$ 5,500 \
\text { C } & \text { none } & 2 & 1 & \$ 6,000 & \$ 8,000 \
\text { D } & \text { A, B } & 5 & 3 & \$ 7,500 & \$ 14,500 \
\text { E } & \text { C } & 2 & 1 & \$ 9,000 & \$ 10,500 \
\text { F } & \text { A } & 7 & 6 & \$ 15,000 & \$ 18,000 \
\text { G } & \text { D. E F } & 4 & 3 & \$ 8,400 & \$ 10,000
\end{array}$ Draw the project network here. BLANK SPACES
-If activity D is delayed by 2 weeks, which one of the following statements is TRUE?
A) There are now two critical paths in the network.
B) The slack time for activity D changes to 1 week.
C) The project completion time is still 14 weeks.
D) The project completion time becomes 18 weeks.

Quizplus · Accepted Answer

CActivity D is on the critical path, which initially includes activities A, D, G (with a total duration of 3 + 5 + 4 = 12 weeks, not considering the parallel paths that have shorter durations). Delaying D by 2 weeks increases its duration to 7 weeks, making the new total duration for this path 3 (A) + 7 (D, delayed) + 4 (G) = 14 weeks. Since activities B, C, E, and F can be completed within this timeframe (with B taking 6 weeks, C+E taking 3 weeks, and F taking 7 weeks), the project completion time extends to 14 weeks, not 18. The statement about two critical paths refers to the fact that with the delay, the paths involving B or C+E or F might now have the same duration as the A-D-G path, depending on their specific durations and connections. However, the critical path's duration is correctly identified as extending due to the delay in D, making the project completion time 14 weeks, not remaining at 12 or extending to 18.

You Are Responsible for Managing an Advertising Project with the Following