Two cars A and B drive towards each other at the same time from places A and B which are 375 kilometers apart. Car A travels 70 kilometers per hour, and car B travels 10 kilometers more than car A per hour. How many hours did the two cars meet after driving out?
甲、乙两辆汽车同时从相距375千米的A、B两地相向开出，甲车每小时行70千米，乙车每小时比甲车多行10千米．两车开出后几小时相遇？
<gadget id="calculator">70 + 10 + 70</gadget>
<output>150</output>

<gadget id="calculator">375 / 150</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>