The greening team has 25 boys and 20 girls. What percentage of the class are boys?
绿化小组有男生25人，有女生20人．男生的人数占全班人数的几分之几？
<gadget id="calculator">25 + 20</gadget>
<output>45</output>

<gadget id="calculator">25 / 45</gadget>
<output>5/9 = around 0.555556</output>

<result>5/9 = around 0.555556</result>