There are 20 boys in Class 2, Grade 6, and 5% fewer girls than boys, so how many girls are there?
六年级2班有男生20人，女生比男生少5%，那么女生有多少人．
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 - (1/20)</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">20 * (19/20)</gadget>
<output>19</output>

<result>19</result>