Air at 50 degree C, 1 atm and a volumetric flow rate of 60 m^3/min enters an insulated control volume operating at steady state and mixes with helium entering as a separate stream at 120 degree C, 1 atm and a volumetric flow rate of 25 m^3/min. A single mixed stream exits at 1 atm. Ignoring kinetic and potential energy effects, determine for the control volume the temperature of the exiting mixture, in degree C. the rate of entropy production, in kW/K. the rate of exergy destruction, in kW, for T_0 = 295 K.