If K₁ and K₂ are the thermal conductivities, L₁ and L₂ are the lengths and A₁ and A₂ are the cross sectional areas of steel and copper rods respectively such that $\frac{{\mathrm{K}}_2}{{\mathrm{K}}_1}=9, \frac{{\mathrm{A}}_1}{{\mathrm{A}}_2}=2, \frac{{\mathrm{L}}_1}{{\mathrm{L}}_2}=2$. Then, for the arrangement as shown in the figure, the value of temperature T of the steel – copper junction in the steady state will be :