A project consists of four consecutive tasks that have average duration and worst-case duration estimates (in days)as shown in the table.Use Goldratt's model to determine the aggregated buffer for this project. $$\begin{array} { | l | l | l | }
\hline\text { Activity } & \text { Average } & \text { Worst-Case } \
\hline\mathrm { A } & 10 & 20 \
\hline\mathrm { B }& 15 & 25 \
\hline \mathrm { C } & 20 & 30 \
\hline \mathrm { D } & 25 & 35 \
\hline
\end{array}$$
A)20 days
B)10 days
C)15 days
D)5 days

Question

A project consists of four consecutive tasks that have average duration and worst-case duration estimates (in days)as shown in the table.Use Goldratt's model to determine the aggregated buffer for this project. $$\begin{array} { | l | l | l | } 
\hline\text { Activity } & \text { Average } & \text { Worst-Case } \
\hline\mathrm { A } & 10 & 20 \
\hline\mathrm {  B }& 15 & 25 \
\hline \mathrm { C } & 20 & 30 \
\hline \mathrm { D } & 25 & 35 \
\hline 
\end{array}$$ 
A)20 days
B)10 days
C)15 days
D)5 days

Quizplus · Accepted Answer

Goldratt's model calculates the project buffer as half the difference between the worst-case and average-case scenarios for all tasks. The total worst-case duration is 20+25+30+35=110 days, and the total average duration is 10+15+20+25=70 days. The difference is 110-70=40 days. Half of this difference is 20 days, which is the project buffer.

A Project Consists of Four Consecutive Tasks That Have Average