There are 55 boys in the sixth grade of a certain school, 15 more than girls, how many girls need to be transferred to make the number of girls account for 45% of the sixth grade.
某校六年级有男生55人，比女生多15人，要使女生人数占六年级人数的45%，需要转入多少名女生．
<gadget id="calculator">45 / 100</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">1 - (9/20)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">55 / (11/20)</gadget>
<output>100</output>

<gadget id="calculator">55 - 15</gadget>
<output>40</output>

<gadget id="calculator">55 + 40</gadget>
<output>95</output>

<gadget id="calculator">100 - 95</gadget>
<output>5</output>

<result>5</result>