The distance between the two places is 545 km. Two cars, A and B, drive from the two places at the same time and drive toward each other. After 3.5 hours, the distance between the two cars is still 90 km. Car A travels 68 km per hour, and how many kilometers does car B travel per hour? ?
两地间的路程是545km，甲、乙两辆汽车同时从两地开出，相向而行，经过3.5小时后两车还相距90km，甲车每小时行68km，乙车每小时行多少千米？
<gadget id="calculator">3.5 * 68</gadget>
<output>238</output>

<gadget id="calculator">545 - 238 - 90</gadget>
<output>217</output>

<gadget id="calculator">217 / 3.5</gadget>
<output>62</output>

<result>62</result>