Methane containing 4 mol% N_{2} is flowing through a pipeline at 105.1 kpa and 22 °C. To check this flow rate, N_{2} at the same temperature and pressure are introduced to the pipeline at the rate of 2.83 m^{3}/min. At the end of the pipe (where the mixing has completed), N_{2} concentration is found to be 4.82 mol%. What is the volumetric flow rate of the original feed (before the addition of N_{2}) in m^{3}/min?