activity Immediate Predecessor Duration ( Weeks ) Optimistic Time Most Likely Time Pessimistic Time A - - 2 5 8 B

activity Immediate Predecessor Duration $($Weeks$)$

 Optimistic Time Most Likely Time Pessimistic Time

A $--258$

B A $234$

C A $68\mathrm{10}$

D A $246$

E B $26\mathrm{10}$

F C $678$

G D$,$E$,$F $68\mathrm{10}$