Gujarat BoardEnglish MediumSTD 7MATHSComparing Quantities2 Marks
Question
What per cent of $1\ km$ is $1000\ m?$
✓
Answer
Let $x\%$ of $1\ km$ be $1000\ m.$
Then, $\frac{\text{x}}{100}\times1\text{km}=1000\text{m}$
$[\therefore 1\ km = 100\ m]$
$\Rightarrow\frac{\text{x}}{100}\times1000\text{m}=1000\text{m}$
$\Rightarrow\text{x}\times10=1000$
$\therefore\text{x}=100\%$
Hence, $100\%$ of $1\ km$ is $30\ m.$
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