In assignment $1,$ you considered the following project with $8$ activities, labelled A to H :

$\backslash$table$[[$Activity$,$Time $($days$),$Precedence$],[$A$,5,-],[$B$,11,$A$],[$C$,15,$A$],[$D$,9,$A$],[$E$,27,$B$,$C$],[$F$,17,$C$,$D$],[$G$,23,$F$],[$H$,13,$G$,$E$]]$

Clearly define variables and propose a linear programming model to find the project's earliest completion time.