Refer to Problem $26$ and Figure $13\mathrm{.}20$

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?Figure $13\mathrm{.}20$

Two project networks.