PM$.66$ Real estate developer Russell Call was working with a few contractors to make a number of improvements to one of his rental properties. After gathering information from these contractors he determined the following durations, predecessors, and costs of all the required activities:

$\backslash$table$[[$Activity$,$Normal Time $($weeks$),$Crashed Time $($weeks$),$Normal Cost,Crashed Cost,Predecessor$($s$)],[$A$,3,2,$$$1,100,$$$3,200,],[$B$,6,5,$$$2,200,$$$2,420,-],[$C$,3,1,$$$1,300,$$$3,000,-],[$D$,7,3,$$$2,100,$$$2,400,$A$],[$E$,6,3,$$$1,650,$$$2,250,$B$],[$F$,3,1,$$$4,000,$$$5,540,$C$],[$G$,4,2,$$$1,650,$$$2,100,$D$,$ E$]]$

What is the overall duration of the project?

Which of the following activities has the lowest crash cost per week?

C

A

D

E

Which of the following activities has the highest crash cost per week?

G

B

C

F

If you wanted to shorten the overall duration of the project, which activity should you crash first?

D

C

A

B

E

What is the total cost of crashing the project from its current duration down to $13$ weeks?

What is the total cost of crashing the project from its original duration to $11$ weeks?