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. $$\begin{array} { | l | l | l | }
\hline \text { Activity } & \text { Average } & \text { Worst-Case } \
\hline A & 10 & 20 \
\hline B & 15 & 25 \
\hline \text { C } & 20 & 30 \
\hline D & 25 & 35 \
\hline
\end{array}$$
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. $$\begin{array} { | l | l | l | } 
\hline \text { Activity } & \text { Average } & \text { Worst-Case } \
\hline A & 10 & 20 \
\hline B & 15 & 25 \
\hline \text { C } & 20 & 30 \
\hline D & 25 & 35 \
\hline
\end{array}$$
A) 20 days
B) 10 days
C) 15 days
D) 5 days

Quizplus · Accepted Answer

Goldratt's model suggests using half of the difference between the worst-case and average durations as the buffer for each task. The total buffer is the sum of these individual buffers: (20-10)/2 + (25-15)/2 + (30-20)/2 + (35-25)/2 = 5 + 5 + 5 + 5 = 20 days.

A Project Consists of Four Consecutive Tasks That Have Average