The distance between AB and AB is 480 kilometers. Two cars, A and B, drive from A to B at the same time. Car A travels 48 kilometers per hour, and car B travels 32 kilometers per hour. Car A returns immediately after arriving at point B. How many hours did it take for the two cars to meet each other?
AB两地之间的距离是480千米，甲乙两辆车同时从A地开往B地．甲车每小时行48千米，乙车每小时行32千米．甲车到达B地后立即返回．两车从开出到相遇共几小时？
<gadget id="calculator">48 + 32</gadget>
<output>80</output>

<gadget id="calculator">2 / 80</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">480 * (1/40)</gadget>
<output>12</output>

<result>12</result>