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>
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