$5$ marks

For the one$-$dimensional composite bar shown in Figure P$13-1,$ determine the interface temperatures. For element $1,$ let $K_{}=200\frac{W}{m*C}$; for element $2,$ let $K_{}=100\frac{W}{m*C}$; and for element $3,$ let $K_{}=50\frac{W}{m*C}.$ Let $A=0\mathrm{.}1m^2.$ The left end has a constant temperature of $100C,$ and the right end has a constant temperature of $300C.$