The distance between A and B is 490 kilometers. A bus and a truck drive towards each other at the same time. They meet each other in 3.5 hours. The bus travels 75 kilometers per hour. How many kilometers does the truck travel per hour?
甲、乙两地相距490千米，客车和货车同时从两地相对而行，3.5小时相遇，客车每小时行驶75千米，货车每小时行驶多少千米？
<gadget id="calculator">3.5 * 75</gadget>
<output>262.5</output>

<gadget id="calculator">490 - 262.5</gadget>
<output>227.5</output>

<gadget id="calculator">227.5 / 3.5</gadget>
<output>65</output>

<result>65</result>