There are 30 boys and 34 girls in Class 1 of five years. What percentage of the total number of boys are in the class?
五年一班男生30人，女生34人，男生占全班总人数的几分之几？
<gadget id="calculator">30 + 34</gadget>
<output>64</output>

<gadget id="calculator">30 / 64</gadget>
<output>15/32 = around 0.46875</output>

<result>15/32 = around 0.46875</result>