There are 20 boys and 28 girls in Class 5 and 2. How many percent are boys compared to girls? What percentage of the class are girls?
五2班有男生20人，女生28人．男生是女生的几分之几？女生占全班人数的几分之几？
<gadget id="calculator">20 + 28</gadget>
<output>48</output>

<gadget id="calculator">28 / 48</gadget>
<output>7/12 = around 0.583333</output>

<result>7/12 = around 0.583333</result>