Thermodynamics: JEE Main 2026 Physics question

10 kg of ice at $-10\ ^\circ\mathrm C$ is added to 100 kg of water to lower its temperature from $25\ ^\circ\mathrm C$. Consider no heat exchange to surroundings. The decrement to the temperature of water is ______ $^\circ\mathrm C$. (specific heat of ice = 2100 J/Kg.°C, specific heat of water = 4200 J/Kg.°C, latent heat of fusion of ice = $3.36\times10^5$ J/Kg)