On a circular track, there are two electric toy cars A and B 100 meters apart. The two cars start at the same time and go in the same direction. Car A is in front and car B is behind. After 5 minutes, car B catches up with car A for the first time. , After another 20 minutes, car B caught up with car A for the second time, and car A just completed a circle at this time. What is the speed of car B in meters per minute?
在一个环形跑道上有相距100米的甲、乙两个电动玩具车，两车同时出发同向而行，甲车在前，乙车在后，5分钟后乙车第一次追上甲车，又过了20分钟，乙车第二次追上甲车，此时甲车正好驶完一圈．那么乙车的速度为每分钟多少米．
<gadget id="calculator">16 + 20</gadget>
<output>36</output>

<result>36</result>