There are 48 people in Class 5 and 2, including 28 boys. What percentage of the whole class are girls?
五2班有48人，其中男生28人，女生占全班同学的几分之几？
<gadget id="calculator">48 - 28</gadget>
<output>20</output>

<gadget id="calculator">20 / 48</gadget>
<output>5/12 = around 0.416667</output>

<result>5/12 = around 0.416667</result>