今天,数学老师给同学们布置课外作业,其中有这样一道题:甲、乙两车分别从A、B两地同时出发,相向而行,在距离两地中点80千米处相遇。已知甲、乙两车的速度比是4∶5,A、B两地的距离是多少千米?吴平看过题目,画出下面的线段图:从这幅图上,吴平还不能找到解题的方法,她真有点儿为难了。“张慧,你能把这道题的解法讲给我听听吗?”吴平说。 Today, the maths teacher arranges extracurricular assignments for the students. Among them, there is such a question: A and B vehicles start at the same time from A and B respectively and meet 80 km from the mid-point of the two places. Known A, B two car speed ratio is 4:5, A, B distance between the two is how many kilometers? Wu Ping read the title, draw the following line segment: From this picture, Wu Ping can not find the solution She's a bit embarrassed. “Zhang Hui, can you tell me the solution to this problem?” Wu Ping said.