Question
Find the number whose $6\frac{1}{4}\%$ is 5.
✓
Answer
Let x be the required number.
Then, $6\frac{1}{4}\%\text{ of }\text{x}=5$
$\Rightarrow\frac{25}{4}\%\text{ of }\text{x}=5$
$\Rightarrow\Big(\frac{25}{4\times100}\times\text{x}\Big)=25$
$\Rightarrow\Big(\frac{\text{x}}{16}\Big)=5$
$\therefore\text{x}=(5\times16)=80$
Hence, the required number is 80.
Then, $6\frac{1}{4}\%\text{ of }\text{x}=5$
$\Rightarrow\frac{25}{4}\%\text{ of }\text{x}=5$
$\Rightarrow\Big(\frac{25}{4\times100}\times\text{x}\Big)=25$
$\Rightarrow\Big(\frac{\text{x}}{16}\Big)=5$
$\therefore\text{x}=(5\times16)=80$
Hence, the required number is 80.
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