Your answer is 95°. This is because angles on a straight line add to 180, so we can subtract 120 from 180 and get 60° as angle 3.
Angles in a triangle also add to 180°, so we can add 60 and 35 to get 95°, and then subtract 95 from 180 to get 85° as angle 1.
Finally you use the angles on a straight line rule and subtract 85 from 180 to get angle 5 as 95°
I hope this helps!
