If the boys in class 6 and 3 account for 60% of the students in the class, what is the percentage of girls in the class?
六3班男生占全班学生人数的60%，则女生占全班学生人数的多少．
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

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