Activity Normal Time $($weeks$)$ Crash Time $($weeks$)$ Normal Cost Total Cost with Crashing Immediate Predecessor$($s$)$

A $43$ $$2,100$ $$2,800-$

B $21$ $$2,200$ $$3,000-$

C $33$ $$500$ $$500-$

D $84$ $$2,300$ $$2,620$ A

E $63$ $$800$ $$1,100$ B

F $32$ $$3,200$ $$4,400$ C

G $42$ $$1,600$ $$2,100$ D$,$ E