A Coffee Cup Calorimeter Contains 480

A coffee cup calorimeter contains 480.0 grams of water at 25.00 °C. To it are added: 380.0 grams of water at 53.5 °C
525.0 grams of water at 65.5 °C Assuming the heat absorbed by the coffee cup is negligible, calculate the expected final temperature of the water. The specific heat of water is 4.184 J g^-1 °C^-1.Hint: Take this problem one step (one water addition) at a time.

A) 38.2 °C
B) 48.2 °C
C) 67.6 °C
D) 88.7 °C
E) 94.4 °C