The following table provides the information necessary to construct a project network and project crash data.

Construct the project network using the AON method, and crash the network the maximum amount possible.

What is the normal cost to complete the project? What is the additional cost to crash the project? $(12$ marks$)$

Activity Predecessors Normal Crash Normal Crash

A $-168$ $$2000$ $$4400$

B $-14910001800$

C A $86500700$

D A $546001300$

E B $4215003000$

F B $648001600$

G C $10730004500$

H D$,$E $151050008000$