\(N=\dfrac{2L}{3,4}=\dfrac{2.0,408.10^4}{3,4}=2400\left(Nu\right)\\ A=T=20\%N=20\%.2400=480\left(Nu\right)\\ G=X=30\%N=30\%.2400=720\left(Nu\right)\\ Mạch.2:X_2=G_1=200\left(Nu\right);T_2=A_1=320\left(Nu\right)\\ A_2=A-A_1=480-320=160\left(Nu\right)\\ G_2=G-G_1=720-200=520\left(Nu\right)\)