Question 2
When the digits of a three-digit number $x$ are written in reverse order, we obtain a number $y$ such that $x+2y=2016$. Determine the sum of all possible values of $x$.
Submission guidance: Give a full solution, as required for this even-numbered problem by the examination cover.
Submission guidance: Give a full solution, as required for this even-numbered problem by the examination cover.