Two cars drive away from A and B at the same time. A travels 10 kilometers, and B travels 15 kilometers before they meet. How many miles is the distance between A and B?
两辆汽车同时从甲乙两地对开，甲行全程10千米，乙行全程15千米后相遇．AB两地相距多少千米？
<gadget id="calculator">10 + 15</gadget>
<output>25</output>

<result>25</result>