$(25\%)$ An air$-$water vapor mixture enters a steady flow heater humidifier at two

separate points $(1$ and $2)$ with the conditions given below:

$1-T_1=15C$ and ${}_1=10\%$ and volumetric flow rate of $1\frac{m^3}{s}$

$2-T_2=20C$ and ${}_2=20\%$ and volumetric flow rate of $2\frac{m^3}{s}$

Liquid water is sprayed into the unit at point $3$ at $T_3=10C$ and a rate of $400k\frac{g}{h}r.$ A

single air$-$vapor flow exits the unit at point $4$ with a temperature of $T_4=40C.$ Find: The mass flow rates if water vapor at points $1$ and $2.$