Division A$\text{'}$s CMR $=40\%$

Division B$\text{'}$s CMR $=50\%$

$\backslash$table$[[$Division ADivision ECompany,Product BIProduct B$2$Division E$],[$Sales$,,,,$Sales,$10,,],[$VC$,,,,$VC$,5,,],[$CM$,40,40,,$CM$,,,],[$Traceable FC$,30,20,,$Traceable FC$,,12,],[$Division margin,,,,Product margin,$3,,],[$Common FC$,,,20,$Common FC$,,,?],[$NOI$,,,,$Division margin,,,$]]$

How much is the common FC for Division B$?$