Xiao Ming and Xiao Jun set off from their home and the Children's Palace at the same time, and went towards each other. Xiao Ming walks 120 meters per minute. After 5 minutes, Xiao Ming has passed the midpoint of the two places by 50 meters. At this time, the two of them are still 30 meters apart. How many meters does Xiao Jun travel per minute?
小明和小军分别同时从家和少年宫出发，相向而行．小明每分钟行120米，5分钟后小明已超过两地中点50米，这时他们俩还相距30米，小军每分钟行多少米？
<gadget id="calculator">120 * 5</gadget>
<output>600</output>

<gadget id="calculator">600 - 50 - 30</gadget>
<output>520</output>

<gadget id="calculator">520 / 5</gadget>
<output>104</output>

<result>104</result>