Refer to Problem 26 and Figure 13.20.

a. For Network (a), suppose after 7 weeks, activities A, B, and E have been completed, D is 50 percent completed, and C is 80 percent completed. What is the revised early completion date for the project?

b. For Network (b), suppose after 25 weeks, activities A, B, C, F, E, G, and I have been completed, and D and H are ready to begin in week 26. What is the revised early completion date for the project?