A road goes from A to C via B. It is known that A and B are 300 meters apart, and B and C are 200 meters apart. Now planting trees on the roadside requires the same distance between two adjacent trees, and one tree must be planted at point B and the midpoint of AB and BC, so how many meters is the maximum distance between the two trees?
一条公路由A经B到C．已知A、B相距300米，B、C相距200米．现在路边植树，要求相邻两树间的距离相等，并在B点及AB、BC的中点上都要植一棵，那么两树间的距离最多有多少米？
<gadget id="calculator">2 * 5 * 5</gadget>
<output>50</output>

<result>50</result>