Angles — practice question

A triangle is drawn between two parallel lines. The angle outside the triangle at the top is marked $x^\circ$, while the angle inside the triangle at the top is marked $y^\circ$. In the lower-left corner, the angle formed by the triangle side and the lower parallel line is $140^\circ$. In the lower-right corner, the matching angle is $120^\circ$. The diagram is NOT TO SCALE.