EXAMPLE (2) ON MATERIAL BALANCE WITHOUT CHEMICAL REACTION A mixture containing 30% benzene (B) and 70% toluene (T) by mass is fed to a distillation column. An overhead stream of 95 wt % B is produced, and 8% of the benzene fed to the column leaves in the bottom stream. The feed rate is 2000kg/h. Determine the overhead flow rate and the mass flow rates of benzene and toluene in the bottom stream