There are 24 boys and 36 girls in Class 2 of the fifth grade. What percentage of the whole class are boys?
五年级2班有男生24人，女生36人，男生人数占全班人数的几分之几？
<gadget id="calculator">24 + 36</gadget>
<output>60</output>

<gadget id="calculator">24 / 60</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>