There are 28 girls, accounting for 3/4 of the whole class, what percentage of the whole class are boys? What is the column
女生28人，占全班的(3/4)，男生占全班的几分之几？列式是多少
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>