Xiao Zhang and Xiao Li are running on a 400-meter circular track. They start from the same place at the same time and walk in the same direction. Xiao Zhang runs 4 meters per second, and Xiao Li runs 6 meters per second. How many minutes have passed since the two met for the first time?
小张和小李在400米的环形跑道上跑步，两人同时从同一地点出发，同向而行．小张每秒跑4米，小李每秒跑6米，出发后经过多少分钟两人第一次相遇．
<gadget id="calculator">10 / 3</gadget>
<output>10/3 = around 3.333333</output>

<result>10/3 = around 3.333333</result>