Two cars, A and B, drive from A and B at the same time. Car A travels 48 kilometers per hour. The speed of car B is 18 kilometers less than that of car A. The distance between the two cars is 45 kilometers. Meet, how many kilometers is the distance between AB and AB?
甲乙两辆汽车同时从A、B两地相对开出，甲车每小时行48千米，乙车的速度比甲车增加了1倍少18千米，两车在距离中点45千米处相遇，AB两地间的距离是多少千米？
<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">48 * 2</gadget>
<output>96</output>

<gadget id="calculator">96 - 18</gadget>
<output>78</output>

<result>78</result>