A person is walking on the road, and from time to time a shuttle bus passes him. Every 4 minutes, one will meet him head-on, and every 6 minutes, one will pass him from behind. If he and the bus are both moving at a constant speed, and the speed of the bus is the same, then the bus station sends a bus every few minutes?
某人在公路上行走，不时往返公共汽车从他身边开过，每隔4分钟就有一辆与此人迎面相遇，每隔6分钟就有一辆从背后超过此人．如果他与公共汽车均为匀速运动，且公共汽车的速度都一样，那么汽车站每隔几分钟发一班车？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/4) + (1/6)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">(5/12) / 2</gadget>
<output>5/24 = around 0.208333</output>

<gadget id="calculator">1 / (5/24)</gadget>
<output>24/5 = around 4.8</output>

<result>24/5 = around 4.8</result>