Time$-$Constrained Problem

A project team has started gathering information necessary to develop a project networkpredecessor activities and activity time in days. The results of their meeting are found in the following table:

$\backslash$table$[[$Description$,$Duration,Predecessor,Number of resources that are needed$],[$A$,2,-,1],[$B$,2,$A$,5],[$C$,2,$A$,1],[$D$,2,$A$,1],[$E$,4,$B$,3],[$F$,1,$C$,$D$,$E$,1]]$

What is the project duration before assigning the resources to the available activities? Which activities are critical? Why?

Assume that we have only $5$ identical resources. Develop a loading chart for resources. Can you complete the project on$-$time without adding more resources?

Use the resource leveling technique to overcome the time$-$constrained problem. What is the time$-$constrained project duration? Which activities are now critical?