The question in the image involves angle relationships around a point. Let's analyze the provided information.

Given Information:

1. There is a straight line $AB$ and another line $CD$, both intersecting at point $O$.
2. Various angles are marked:
   • $\angle AOD = 2z$
   • $\angle AOC = 4y$
   • $\angle COE = 60^\circ$
   • $\angle BOE = y$
   • $\angle BOD = x$

Steps:

1. Sum of angles around point $O$: The total sum of angles around a point is $360^\circ$. $2z + 4y + 60^\circ + y + x = 360^\circ$ Simplifying this: 2z + 5y + x = 300^\circ \quad \text{(since 360^\circ - 60^\circ = 300^\circ)}.

Questions:

i) What is the value of $x$? This will depend on the values of $z$ and $y$, so we need to solve for them first.

ii) What is the value of $z$? We don't yet have enough information directly for $z$, but it's related to the other angles.

iii) What is the value of $y$?

iv) What should be the value of $x + 2z$?

v) What is the relation between $y$ and $z$?

Would you like me to proceed with solving for $x$, $y$, and $z$ based on the equation and any assumptions?