Replying to Physics: Thermodynamics

So i have this problem i cant figure out, and i know its basic, but i'm having a brain lapse, its on a test that i have to finish, so i need the correct answer, which ends up in the range of 30 some degrees Celcius. Problem is as follows:

5grams of steam with a temperature of 245 degrees Farenheit(118.333 C) is bubbled down to a temperature of 100 C. its then mixed with 100grams of water at 20 C. What is the final temperature?

Little help?

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