A car salesperson sells 3 types of cars. On the first day, he sold 3 Model A cars and 2 Model B cars, with a total income of 260,000 yuan. The next day he sold 3 Model B cars and 2 Model C cars, with a total income of 160,000 yuan. On the third day, he sold 3 Model C cars and 2 Model A cars, with a total income of 180,000 yuan. So, how much is the price of a C-type car?
一个汽车销售人员销售3种汽车．第一天他售出了3辆A型车、2辆B型车，总收人为260000元．第二天他售出了3辆B型车、2辆C型车，总收人为160000元．第三天他售出了3辆C型车、2辆A型车，总收人为180000元．那么，一辆C型车的售价是多少元元．
<gadget id="calculator">300_000 - 160_000</gadget>
<output>140_000</output>

<gadget id="calculator">140_000 / 7</gadget>
<output>20_000</output>

<result>20_000</result>