following table:

$\backslash$table$[[,\backslash$table$[[$Normal$],[$Time $($weeks$)]],\backslash$table$[[$Crash$],[$Time $($weeks$)]],\backslash$table$[[$Normal$],[$Cost$]],\backslash$table$[[$Total Cost$],[$with$],[$Crashing$]],$Immediate Predecessor$($s$)],[$Activity$,2,$$$1,200,$$$1,850,-,],[$A$,3,1,$$$2,300,$$$3,050,-],[$B$,2,1,$$$300,$$$300,-],[$C$,1,3,$$$1,500,$$$1,800,$A$],[$D$,7,3,$$$900,$$$1,200,$B$],[$E$,6,1,$$$4,000,$$$5,000,$C$],[$F$,2,$$$2,$$$1,600,$$$2,100,$D$,$ E$],[$G$,4,,,,]]$

a$)$ Based on the given information regarding the activities for the project, the project completion date $=14$ weeks.

b$)$ To reduce the duration of the project to $10$ weeks at the least cost, the following is the order of what needs to be followed while crashing the activities:

The first activity to crash is $1$ by $2$ weeks at a per week crashing cost of dollars.

Next, one should crash activity $D$ and activity $A,$ by $2$ weeks for an additional total per week crashing cost of dollars. WHAT IS THE VALUE IN THE BLANK