An adiabatic mixer has two inlet streams and one outlet stream:

The mass flowrate of inlet stream $1$ is $100\frac{kg}{hr}$ and the temperature is $12\mathrm{.}2C.$

The mass flowrate of inlet stream $2$ is $25\mathrm{.}2\frac{kg}{hr}$ and the temperature is $56\mathrm{.}6C.$

The specific heat of all the streams is $261\mathrm{.}4\frac{kJ}{kg-K}$

Assume a reference temperature of $25C$

What is the temperature of the outlet stream in units of degrees $C?$