$4$ pts

A project has been defined to contain the following activities, along with their time estimates for their completion.

What is the project duration?

$\backslash$table$[[$ACTIVITY$,$IMMEDIATE,OPTIMISTIC,,$],[$PREDECESSOR$,$MURATION,$\backslash$table$[[$MOST LIKELY$],[$DURATION$]],\backslash$table$[[$PESSIMISTIC$],[$DURATION$]],],[$A$,-,1,4,7],[$B$,A,2,6,7],[$C$,D,3,4,6],[D,A,6,12,14],[$E$,D,3,6,12],[F,B,C,6,8,16],[G,E,F,1,5,6]]$

$35$

$33$

$30\mathrm{.}66$

$6\mathrm{.}33$