Question

$x\%$ of $y$ is $y\%$ of ?

Answer 1

Use Percentage Concept

Let us consider that,

$x\%$ of $y$ is equal to $y\%$ of $m$.

Then,

$$\begin{gathered} \Rightarrow x\%\mathrm{of}y=y\%\mathrm{of}m \\ \Rightarrow \frac{x}{100}\times y=\frac{y}{100}\times m \\ \Rightarrow x\times y=y\times m \\ \Rightarrow m=\frac{xy}{y} \\ \therefore m=x \end{gathered}$$

Hence, $x\%$ of $y$ is equal to $y\%$ of $x$.