There are 24 girls in Class 51, and 40% of the boys in the class. How many people are there in the class?
五1班女生有24人，男生是全班的40%，全班有多少人？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">24 / (3/5)</gadget>
<output>40</output>

<result>40</result>