Zagor5
Calculation with fractions
<table>
<tr>
<th>Number of Boys</th>
<th>Proportion</th>
</tr>
<tr>
<td>25</td>
<td>100%</td>
</tr>
<tr>
<td>1</td>
<td>4%</td>
</tr>
<tr>
<td>9</td>
<td>36%</td>
</tr>
</table>
<p>
36% of the boys do not like football.
</p>
<h2>Calculate the percentage. Round to one decimal place.</h2>
<p>a) 18 m of 600 m p% = </p>
<p>
\[p\%=\frac{18}{600}\approx0,03=3\%\]
</p>
<p>b) 24 g of 300 g</p>
<p>
\[p\%=\frac{24}{300}\approx0,08=8\%\]
</p>
<p>c) 641 von 801</p>
<p>
\[p\%=\frac{641}{801}\approx0,8=80\%\]
</p>
<h2>Class 7a has 12 boys and 8 girls.</h2>
<p>a) The percentage of boys is 60%.</p>
<p>b) A new boy joins the class. The proportion (c) of boys is now 61.9%.</p>
<table>
<tr>
<th>Number</th>
<th>Proportion</th>
</tr>
<tr>
<td>:20</td>
<td>100%</td>
</tr>
<tr>
<td>12</td>
<td>60%</td>
</tr>
</table>
<p>
<span lang="de">W₁₃</span>
<span lang="en">≈</span> 0.619 = 61.9%
</p>
<p>p% = ?</p>