The distance between A and B is 2250 kilometers. A passenger car and a truck leave from A and B at the same time and drive toward each other. The truck travels 70 kilometers per hour, and the speed of the passenger car is 180 kilometers. The passenger car and the How many hours did the wagons meet?
甲、乙两地相距2250千米，一辆客车和一辆货车分别从甲、乙两地同时开出，相向而行，货车每小时行70千米，客车的速度是180千米，客车和货车经过几小时相遇？
<gadget id="calculator">70 + 180</gadget>
<output>250</output>

<gadget id="calculator">2_250 / 250</gadget>
<output>9</output>

<result>9</result>