An Ideal Brayton Cycle Has a Net Work Output of 220

Multiple Choice

An ideal Brayton cycle has a net work output of 220 kJ/kg and a backwork ratio of 0.4. If both the turbine and the compressor had an isentropic efficiency of 75%, the net work output of the cycle would be

A) 165 kJ/kg
B) 79 kJ/kg
C) 293 kJ/kg
D) 379 kJ/kg
E) 182 kJ/kg