Two cars, A and B, drive from two places 455 kilometers apart at the same time. After 3.5 hours, they meet each other. Car A travels 68 kilometers per hour. How many kilometers per hour does car B travel? (column equation solution)
甲、乙两辆汽车同时从相距455千米的两地相对开出，经过3.5小时相遇，甲车每小时行68千米，乙车每小时行多少千米？(列方程解答)
<gadget id="calculator">3.5 * 68</gadget>
<output>238</output>

<gadget id="calculator">455 - 238</gadget>
<output>217</output>

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

<result>62</result>