Activity Predecessors Duration

$($weeks$)$

A $-4$

B $-5$

C A $2$

D B $6$

E D $3$

F C $6$

G E$,$ F $6$

Normal Crashed

Activity Cost Duration

$($weeks$)$

Extra Cost Duration

$($weeks$)$

A $5,00044,0003$

B $10,00053,0002$

C $4,00025,0001$

D $4,50063,0004$

E $2,000310002$

F $7,500650004$

G $3,000630004$

a$)$ Construct the project$$s network. $(5$ points$)$

b$)$ Identify the critical path and the total duration of the project. $(5$

points$)$

c$)$ Identify which activities have slack time. $(5$ points$)$

d$)$ After $2$ iterations of crashing, what is the total duration of the