Three rods of material 'A' and three rods of material '13' are connected as shown in the figure. All rods have same length and cross-sectional areas. If end 1 and 5 are maintained at 100 and 20°C,...

Three rods of material 'A' and three rods of material '13' are connected as shown in the figure. All rods have same length and cross-sectional areas. If end 1 and 5 are maintained at 100 and 20°C, find the temperature at junction 2. Given kA = 800 W/ m°C and kB = 410 W/m°C.