and B are walking toward each other from A and B at the same time. When A and B meet, they are still 30km away from the midpoint. It is known that A's speed is B's (5/6), find the two places A and B What is the distance in kilometers?
甲、乙二人从A、B两地同时相向而行，当甲、乙相遇时，距中点还有30km，已知甲速是乙速的(5/6)，求A、B两地间的距离是多少千米？
<result>600</result>