If two adjacent angles of a parallelogram are in the ratio $1:1$, find the measure of all the angles of a parallelogram. 

Divide $₹50000$ into two parts, so that $20\%$ of the smaller part exceeds $10\%$ of the larger part by $1000$.

The angles of a quadrilateral are in the ratio $1:2:3:4$. Find the measure of each angle.