Project Test Bank is composed of activities we will refer to as A,B,C,and D for convenience (and lack of creativity).Durations and precedence requirements are shown in the table.Each of these activities can be conveniently laddered into two sub-activities of equal duration,so activity C in the original project becomes two activities,C1 and C2,each of which lasts 7 days.The first half of each activity serves as the predecessor to its second half and the first half of the original following activity.What is the difference in the late start time for activity C in the original project and activity C1 in the laddered project? $$\begin{array} { | l | l | l | }
\hline \text { Activity } & \text { Length } & \text { Predecessor } \
\hline \text { A } & 10 & -- \
\hline B & 18 & \text { A } \
\hline \mathrm { C } & 14 & \text { A } \
\hline \mathrm { D } & 20 & \text { B, C } \
\hline
\end{array}$$
A)3
B)5
C)7
D)9

Question

Project Test Bank is composed of activities we will refer to as A,B,C,and D for convenience (and lack of creativity).Durations and precedence requirements are shown in the table.Each of these activities can be conveniently laddered into two sub-activities of equal duration,so activity C in the original project becomes two activities,C1 and C2,each of which lasts 7 days.The first half of each activity serves as the predecessor to its second half and the first half of the original following activity.What is the difference in the late start time for activity C in the original project and activity C1 in the laddered project? $$\begin{array} { | l | l | l | } 
\hline \text { Activity } & \text { Length } & \text { Predecessor } \
\hline \text { A } & 10 & -- \
\hline B & 18 & \text { A } \
\hline \mathrm { C } & 14 & \text { A } \
\hline \mathrm { D } & 20 & \text { B, C } \
\hline
\end{array}$$
A)3
B)5
C)7
D)9

Quizplus · Accepted Answer

In the original project, activity C has a duration of 14 days and its late start time is 32. In the laddered project, activity C1 has a duration of 7 days and its late start time is 34.

To find the difference in late start time, we need to subtract the late start time of C1 from the late start time of C in the original project:

32 - 34 = -2

However, since we are only interested in the absolute value of the difference, the answer is 2.

Therefore, the difference in the late start time for activity C in the original project and activity C1 in the laddered project is 2, which is closest to choice C (7 - 5 = 2).

Project Test Bank Is Composed of Activities We Will Refer