A factory makes a product that has a manufacturing process consisting of tasks $A,$dots,$K$ that must be complet the performance time in minutes$/$unit and the preceding task$($s$)$ for tasks $A,$dots,$K.$

$\backslash$table$[[$Task$,$Performance Time,Preceding Tasks$],[$A$,8,$NA$],[$B$,8,$NA$],[$C$,3,$A$],[$D$,3,$A$,$ B$],[$E$,7,$B$],[$F$,3,$C$],[$G$,8,$F$],[$H$,5,$D$,$ E$],[$I$,6,$H$],[$J$,2,$E$],[$K$,8,$G$,$ I, J$]]$