A ceramic coffee cup with m=0.113 kg and ccup=1090 J/(kg.°K) is initially at room temperature (24°C). If 225 g of 80.3°C coffee and 12.2 g of 5°C cream are added to the cup, what is the equilibrium temperature of the system in °C? Assume no heat is exchanged with the surroundings and that the specific heat of cream and coffee is the same as water (cwater=4186 J/(kg.°K)).