Problem $4-15$

For the network shown:

a$-1.$ Determine the critical path.

A$-$B$-$D$-$G

A$-$C$-$F$-$G

A$-$C$-$E$-$G

A$-$B$-$E$-$G

a$-2.$ Determine the early completion time in weeks for the project.

Early completion time

$]$ weeks

For the data shown, reduce the project completion time by three weeks. Assume a linear

cost per week shortened.

b$-1.$ Which activities in order of reduction would be shortened?

B$-$B$-$B

G$-$E$-$A

B$-$G$-$D

D$-$B$-$C

b$-2.$ Find the resulting cost to crash.