Problem $2$

A network with the activity times $($in days$)$ and other relevant data is shown below.

a$.$ Find the critical path and the normal project length.

b$.$ Find the project length and project cost if all activities are crashed to their minimum

completion times.

c$.$ Which activities would you crash? What would be the total cost when crashing only these

activities $($rather than all of them, as above$)?$