Mạch 1 có 2400 nu, nên :
A1 = T2 = 240 nu
T1 = A2 = 720 nu
G1 = X2 = 480 nu
=> X1 = G2 = 960 nu
\(A_1=T_2=\dfrac{10.2400}{100}=240\left(nu\right)\)
\(T_1=A_2=\dfrac{30.2400}{100}=720\left(nu\right)\)
\(G_1=X_2=\dfrac{20.2400}{100}=480\left(nu\right)\)
\(X_1=G_2=2400-240-720-480=960\left(nu\right)\)