The ratio of female workers to male workers in a certain workshop is 1:2. If 5 male workers and 5 female workers are transferred, the ratio of female workers to male workers is 1:3. How many people were there in this workshop?
某车间的女工人数和男工人数的比是1：2，若调走5个男工和5个女工，则女工人数和男工人数的比是1：3．这个车间原来有多少人？
<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<gadget id="calculator">15 - 5</gadget>
<output>10</output>

<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">10 / 1</gadget>
<output>10</output>

<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<gadget id="calculator">20 + 10</gadget>
<output>30</output>

<result>30</result>