There are 50 pencils in some pencils, of which 15 are red, 13 are green, and the rest are yellow. What percentage of the total number are yellow?
一些铅笔有50支，其中红色的有15支，绿色的有13支，剩下的是黄色，黄色的占总数的几分之几？
<gadget id="calculator">50 - 15 - 13</gadget>
<output>22</output>

<gadget id="calculator">22 / 50</gadget>
<output>11/25 = around 0.44</output>

<result>11/25 = around 0.44</result>