Separation process. Please help me solve these questions with complete handwritting solution. Please don't answer by using other tutor's answer.Thank you. Have a nice day.

13.4-2. Use of Complete-Mixing Model for Membrane Design. A membrane having a thickness of 2 x 10 cm, a permeability P'A = 400 x 10-19 cm (STP)-cm/ (s.cm?.cm Hg), and an a* = 10 is to be used to separate a gas mixture of A and B. The feed flow rate is qs = 2 x 103 cm(STP)'s and its composition is xp = 0.413. The feed-side pressure is 80 cm Hg and the permeate-side pressure is 20 cm Hg. The reject composition is to be x, = 0.30. Using the complete-mixing model, calculate the permeate composition, the fraction of feed permeated, and the membrane area