Total cost of crashing the project to minimum$($or maximum weeks$$ possible$)=$ Activity Normal Time $($weeks$)$ Crash Time $($weeks$)$ Normal Cost Total Cost with Crashing Immediate Predecessor$($s$)$

A $43$ $$2,100$ $$2,700-$

B $21$ $$2,100$ $$2,700-$

C $33$ $$600$ $$600-$

D $84$ $$2,500$ $$2,780$ A

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

F $32$ $$3,200$ $$4,600$ C

G $42$ $$1,600$ $$2,000$ D$,$ E