What is the early start time for Activity G given the activity times and precedence requirements shown in the table? $$\begin{array} { | l | l | l | }
\hline \text { Activity } & \text { Time } & \text { Predecessar } \
\hline \text { A } & 5 & - - \
\hline B & 7 & - - \
\hline \mathrm { C } & 8 & \mathrm {~A} \
\hline \mathrm { D } & 7 & \mathrm {~A} \
\hline \mathrm { E } & 4 & \mathrm {~B} \
\hline \mathrm { F } & \mathrm { 8 } & \mathrm { C } , \mathrm { D } \
\hline \mathrm { G } & \mathrm {9 } & \mathrm { E } , \mathrm { F } \
\hline \mathrm { H } & 7 & \mathrm { G } \
\hline
\end{array}$$
A)22
B)21
C)20
D)19

Question

What is the early start time for Activity G given the activity times and precedence requirements shown in the table? $$\begin{array} { | l | l | l | } 
\hline \text { Activity } & \text { Time } & \text { Predecessar } \
\hline \text { A } & 5 & - - \
\hline B & 7 & - - \
\hline \mathrm { C } & 8 & \mathrm {~A} \
\hline \mathrm { D } & 7 & \mathrm {~A} \
\hline \mathrm { E } & 4 & \mathrm {~B} \
\hline \mathrm { F } & \mathrm { 8 } & \mathrm { C } , \mathrm { D } \
\hline \mathrm { G } & \mathrm {9 } & \mathrm { E } , \mathrm { F } \
\hline \mathrm { H } & 7 & \mathrm { G } \
\hline
\end{array}$$
A)22
B)21
C)20
D)19

Quizplus · Accepted Answer

The early start time for Activity G can be calculated by finding the maximum value of the sum of the duration and early start time of all its predecessor activities. In this case, the predecessor activities of G are C and F. Thus, the possible early start times for G are: 
- Early finish time of C: 18 + 2 = 20 
- Early finish time of F: 16 + 5 = 21 
The maximum value is 21, so the early start time for Activity G is 21. 
Therefore, the best choice is B.

What Is the Early Start Time for Activity G Given