Explain how to solve

QUESTION $2$

$(20$ Marks$)$

You have signed a contract to build a garage for Simpsons. You will receive a R$500$ bonus for completing the project within $15$ working days. The contract also contains a penalty clause in which you will lose R$100$ for each day the project takes longer than $15$ working days.

Using the information given below, complete the forward and backward pass, compute the activity slack and identify the critical path. Do you expect to receive a bonus of a penalty on this project?

$\backslash$table$[[$ID$,$Description,Predecessor,Time $($days$)],[$A$,$Pour foundation,None,$3],[$B$,$Erect frame,A$,4],[$C$,$Roof,B$,4],[$D$,$Window,B$,1],[$E$,$Doors,B$,1],[$F$,$Electrical,B$,3],[$G$,$Rough$-$in$-$frame,C$,$D$,$E$,$F$,2],[$H$,$Door opener,E$,$F$,$G$],[$I$,$Paint,G$,$H$,1],[$J$,$Clean$-$up$,$I,$2]]$