Consider a steam power plant that operates on the regenerative Rankine cycle with one open feedwater heater. The steam enters the turbine at a pressure of 300 psia and temperature of 650°F. 17.2% of the steam is bled from the turbine as saturated vapor at 15 psia for the regeneration. The pressure at the turbine exit is 6 psia and the isentropic efficiency of the turbine is 87%. The net power output of the plant is 120 MW and the pump consumes 5 MW. The mass flow rate of steam at the turbine inlet is?