\(MCD:R_1//R_2\)
\(\rightarrow R=\dfrac{R_1\cdot R_2}{R_1+R_2}=\dfrac{20\cdot30}{20+30}=12\Omega\)
\(\rightarrow U=U_1=U_2=IR=12\cdot1,2=14,4V\)
\(\Rightarrow\left\{{}\begin{matrix}I_1=\dfrac{U_1}{R_1}=\dfrac{14,4}{20}=0,72A\\I_2=\dfrac{U_2}{R_2}=\dfrac{14,4}{30}=0,48A\end{matrix}\right.\)