A partially solved PERT problem is detailed in the table below. Times are given in weeks.

A Activity Preceding

Optimistic Probable Pessimistic Expected

$\backslash$table$[[$A$,$Time,Time,Time,$],[$B$,$A$,2,2,8],[$C$,$A$,8,12,16],[$D$,7,9,14,],[$E$,$C$,4,6,8],[$F$,$B$,6,8,10],[$G$,$F$,2,3,4],[$H$,$D$,$ E$,2,2,8],[$I$,$G$,6,8,16],[$J$,$H$,4,6,14],[$K$,$I, J$,2,2,5]]$

What is the probability of completion of the project AFTER week $40?$

$76\mathrm{.}35$

tsus

$455\%$

san