The distance between Chongqing Station and Chengdu Station is 760 kilometers. A bus departs from Chongqing Station to Chengdu Station and travels 80 kilometers per hour; when the bus has traveled 160 kilometers, a small car departs from Chengdu Station to Chongqing Station and travels 120 kilometers per hour. How many hours later will the two cars meet?
重庆车站与成都车站的路程760千米．一辆客车从重庆车站出发往成都车站开去，每小时行80千米；当客车已行160千米时，一辆小车从成都车站出发向重庆车站开去，每小时行120千米．几小时后两车相遇？
<gadget id="calculator">760 - 160</gadget>
<output>600</output>

<gadget id="calculator">80 + 120</gadget>
<output>200</output>

<gadget id="calculator">600 / 200</gadget>
<output>3</output>

<result>3</result>