One kilogram of water at 45°C is mixed with 1.5 kg of alcohol at 20°C. What is the final temperature of the mixture? (cₐₜₑᵣ=4186 J/kg°C, cₐₗₒₕₒₗ=2400J/kg°C)
a. 22°C
b. 33°C
c. 44°C
d. 55°C