In the figure, lines $u$ and $v$ are parallel. A transversal intersects lines $u$ and $v$. A line segment is drawn from line $u$ perpendicular to line $u$, extending to intersect the transversal. This forms a right triangle. The acute angle of this triangle at line $u$ is $(x+10{)}^{\circ }$. The other acute angle of this triangle is $(x+y{)}^{\circ }$. The angle formed by the transversal and line $v$ that is corresponding to the angle $(x+10{)}^{\circ }$ on line $u$ is $(2y-30{)}^{\circ }$. What is the value of $y$?