The circumference of a circular runway is 600 meters. Two students walk in the opposite direction from the same starting point. A’s speed is 55 m/min, and B’s speed is 65 m/min. How many minutes will it take for the two students to meet for the first time?
一个环形跑道的周长是600米，两个学生从同一起点反向而行，甲的速度是55米/分，乙的速度是65米/分，经过几分钟两人才能第一次相遇？
<gadget id="calculator">55 + 65</gadget>
<output>120</output>

<gadget id="calculator">600 / 120</gadget>
<output>5</output>

<result>5</result>