Answer:
Heat gain = Heat loss
Latent heat of fusion of water = 80 kcal/kg
Specific heat of water = 1 kcal /kg deg C
Heat gain = 1.33 * 80 + (12.4 + 1.33) T = 106 + 13.7 T
Heat Loss = 12.4 * (20 - T) = 248 - 12.4 ΔT
106 + 13.7 T = 248 - 12.4 T
26.1 T = 142
T = 5.4 final temperature