An aluminum and an iron rod of the same length and cross sectional area are joined end to end. The aluminum end is kept at 145c while the iron end is...

An aluminum and an iron rod of the same length and cross sectional area are joined end to end. The aluminum end is kept at 145°c while the iron end is kept at 15°c. what is the temperature at the aluminum iron interface? the thermal conductivity especially are kiron=80J/s/m/°c and Kal =220 j/s/m°c