8If it appears that any method of apportionment given by paragraph 7 above would work unreasonably or unjustly for any case for which it is given, such other method shall be used for that case as appears just and reasonable.
8If it appears that any method of apportionment given by paragraph 7 above would work unreasonably or unjustly for any case for which it is given, such other method shall be used for that case as appears just and reasonable.