Two trains, A and B, depart from A and B oppositely at the same time. The speed ratio of the two trains is 5:6. They meet at a distance of 30 kilometers from the midpoint. What is the distance in kilometers between A and B? ?
甲、乙两辆列车同时从A、B两地相对开出，甲乙两车的速度比是5：6，在距离中点30千米处相遇，问A、B两地的距离是多少千米？
<gadget id="calculator">11 * 15</gadget>
<output>165</output>

<result>165</result>