Final Temp of Tea After Pour into Glass Cup

[shayur goorah]

If 0.22L of tea at 95 degrees C, is poured into a 150g glass cup initially at 25 degrees C, what will the final temperature be, assuming no heat is lost to the surroundings?

 

[tyco05]

What have you tried?

 

[shayur goorah]

I tried the following:
0.21(95-T) = 150(25+T)

and then solved for T but it did not work out

 

[shayur goorah]

its actually 0.22 and 0.21