The distance between A and B is 560 kilometers. A passenger car and a truck leave from A and B at the same time. After 3.5 hours, the two cars meet. The bus travels 90 kilometers per hour. How many kilometers per hour does the truck travel?
甲、乙两地相距560千米，一列客车和一列货车同时从甲、乙两地相对开出，经过3.5小时两车相遇，客车每小时行90千米，货车每小时行多少千米？
<gadget id="calculator">3.5 * 90</gadget>
<output>315</output>

<gadget id="calculator">560 - 315</gadget>
<output>245</output>

<gadget id="calculator">245 / 3.5</gadget>
<output>70</output>

<result>70</result>