Answer : Option D

Explanation :

y is 10% more than 125

$MF#%\Rightarrow y = 125 \times \dfrac{\left(100+10\right)}{100} = 125 \times \dfrac{110}{100}$MF#%

$MF#%\begin{align}
&\Rightarrow x = y\times \dfrac{\left(100-10\right)}{100} = y \times \dfrac{90}{100}=125 \times \dfrac{110}{100}\times \dfrac{90}{100} \\\\
&=\dfrac{125 \times 110 \times 90}{100 \times 100} = \dfrac{125 \times 11\times 9}{100 } = \dfrac{1375 \times 9}{100 } = \dfrac{1375 \times 9}{100 } = 123.75
\end{align} $MF#%