Question
What per cent of $1\ kg$ is $125\ g?$
✓
Answer
Let $x \%$ of $1\ kg$ be $125\ g$
Then, $\Big(\frac{\text{x}}{100}\times1\times1000\Big)\text{g}=125\text{g}$
$\Rightarrow10\text{x}=125$
$\Rightarrow\text{x}=\Big(\frac{125}{10}\Big)\%$
$=12\frac{1}{2}\%$
Hence, $=12\frac{1}{2}\%$ of $1\ kg$ is $125g.$
Then, $\Big(\frac{\text{x}}{100}\times1\times1000\Big)\text{g}=125\text{g}$
$\Rightarrow10\text{x}=125$
$\Rightarrow\text{x}=\Big(\frac{125}{10}\Big)\%$
$=12\frac{1}{2}\%$
Hence, $=12\frac{1}{2}\%$ of $1\ kg$ is $125g.$
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