Using the information provided in the table, the network diagram and the project completion time $=25$ weeks, reduce the completion time of the project by $5$ weeks in the most economical way.

$\backslash$table$[[$Activity$,\backslash$table$[[$Normal$],[($weeks$)]],\backslash$table$[[$Normal$],[$Cost $($$$)]],\backslash$table$[[$Crash Time$],[($weeks$)]],\backslash$table$[[$Crash$],[$Cost $($$$)]],\backslash$table$[[$Maximum$],[$Weeks$],[$Reduced$]],\backslash$table$[[$Crash Cost$],[$per Week $($$$)]]],[$A$,3,550,2,970,1,420],[$B$,4,650,3,740,1,90],[$C$,6,800,3,1,310,3,170],[$D$,6,1,600,4,2,260,2,330],[$E$,6,1,750,4,2,270,2,260],[$F$,5,200,5,200,0,0],[$G$,7,1,600,5,1,900,2,150],[$H$,3,450,3,450,0,0]]$

$($If there is no amount for a box enter $0.$ All boxes must be filled.$)$