There are 16 boys and 24 girls in Class 51, how many boys account for the whole class.
五1班有男生16人，女生24人，男生占全班人数的多少．
<gadget id="calculator">16 + 24</gadget>
<output>40</output>

<gadget id="calculator">16 / 40</gadget>
<output>2/5 = around 0.4</output>

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