A and B start from two places AB at the same time and walk towards each other. Their speed ratio at the start is 4:3. After they met for the first time, A’s speed increased by 20%, and B’s speed increased by 30%. When A arrived at point B, B was still 5 kilometers away from point A. Find the distance between A and B.
甲乙两人分别从AB两地同时出发相对而行．出发时他们的速度比4：3，他们第一次相遇后，甲的速度提高了20%，乙的速度提高了30%，当甲到达B地时，乙离A地还有5千米．求AB两地之间的距离．
<result>22.4</result>