Air in an isentropic process and at a rate of 6 kg/s is expanded through the throat to an exit Mach.

Air in an isentropic process and at a rate of 6 kg/s is
expanded through the throat to an exit Mach number of 3. The air pressure and
temperature at the inlet of are Po = 300 kPa and To = 300
C, respectively. Find a) the throat area, b) the air pressure and temperature
at the exit, c) exit velocity and area.