Methane containing 4 mol% N2 is flowing through a pipeline at 105.1 kpa and 22 °C. To check this flow rate, N2 at the same temperature and pressure are introduced to the pipeline at the rate of 2.83 m3/min. At the end of the pipe (where the mixing has completed), N2 concentration is found to be 4.82 mol%. What is the volumetric flow rate of the original feed (before the addition of N2) in m3/min?