### Instruction: If $200\%$ of $x$ is equal to $50\%$ of $y$, and $x = 16$, what is the value of $y$?### Response: I want to find $y$, and I know that $200\%$ of $x$ is equal to $50\%$ of $y$, so I can write an equation to represent this relationship: $2x = 0.5y$.
I also know that $x = 16$, so I can substitute that value into the equation: $2(16) = 0.5y$.