The school set up a painting group. The ratio of boys to girls was 9:11. Later, 16 girls joined. At this time, the ratio of boys to girls was 1:3. How many people were there in the painting group?
学校成立了绘画小组，男生与女生的人数比为9：11，后来又有16名女生加入，这时男生与女生的人数比为1：3，这时绘画小组共有多少人？
<gadget id="calculator">11 / 9</gadget>
<output>11/9 = around 1.222222</output>

<gadget id="calculator">3 - (11/9)</gadget>
<output>16/9 = around 1.777778</output>

<gadget id="calculator">16 / (16/9)</gadget>
<output>9</output>

<gadget id="calculator">9 * 3</gadget>
<output>27</output>

<gadget id="calculator">9 + 27</gadget>
<output>36</output>

<result>36</result>