There are 48 students in Class 1 of five years, including 28 girls. What percentage of the total number of students are boys?
五年一班有学生48人，其中有女生28人，男生占全班总人数的几分之几？
<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>