Y is 95 degrees
Reasoning
120 degrees is given, the 120 is supplementary to angle x meaning that it adds to 180. Therefor to find angle x you take 180-120 which equals 60. With angle x being 60 we can find angle y. All triangles add to 180 degrees and you have to sides one being 60 and the other being 25 adding them gets you 85. Take 180 and minus 85 that will get u what y equals 180-85=95