A and B are walking towards each other along the railway line at the same speed. It takes 8 seconds for a train to pass by A, and 5 minutes later for the train to pass by B again. It takes 7 seconds, so how many minutes later? A and B meet.
甲、乙两人沿铁路线相向而行，速度相同，一列火车从甲身边开过用了8秒钟，5分钟后火车又从乙身边开过，用了7秒钟，那么再过多少分钟甲、乙两人相遇．
<result>35</result>