Three cars with fast, medium and slow speeds start from the same place at the same time and chase a cyclist in front along the same road. The three cars take 6 minutes, 10 minutes, and 12 minutes to catch up with the cyclist respectively. Now we know that the fast car If the car travels 24 kilometers per hour, and the CRRC travels 20 kilometers per hour, then how many kilometers does the slow train travel per hour?
速度为快、中、慢的三辆汽车同时从同一地点出发，沿同一公路追赶前面一个骑车人，这三辆车分别用6分钟、10分钟、12分钟追上骑车人，现在知道快车每小时行24公里，中车每小时行20公里，那么慢车每小时行多少公里．
<gadget id="calculator">14 + 5</gadget>
<output>19</output>

<result>19</result>