How to Solve this path by using dummy activity

Member for

11 years 6 months

Dear Zoltan,

First of all, my apologize for  post this question  over here,because its not 100% related to primavera.

I'm trying to solve this network diagram by using CPM/PERT method with the help of dummies.

But i'm not sure,whether i'm solving it in right way,if its wrong, some suggestions  needed.

Kindly see attached picture below[[wysiwyg_imageupload:5238:]]

Member for

16 years 3 months

I dont see a question ?