Problem $4-20($Static$)$

Assume the network and data that follow:

b$.$ Indicate the critical path whien normal activity times are used.

A$-$D$-$F$-$G

A$-$D$-$E$-$G

A$-$C$-$F$-$G

A$-$B$-$E$-$G

c$.$ Compute the minimum total direct cost for each project duration based on the cost associated with each activity. Consider durations

of $13,14,15,16,17,$ and $18$ weeks.

Note: Leave no cells blank $-$ be certain to enter $"$O$"$ wherever required.