Xiaopang and Xiaoya left the cinema and rushed back to school. After Xiaopang walked at a speed of 120 m/min for 5 minutes, Xiaoya chased him at a speed of 150 m/min. At this speed, how many minutes would it take for Xiaoya to catch up with Xiaopang?
小胖和小亚先后离开电影院赶回学校．小胖以120米/分的速度走了5分钟后，小亚以150米/分的速度追了上去，照这样的速度，几分钟后小亚才能追上小胖？
<gadget id="calculator">120 * 5</gadget>
<output>600</output>

<gadget id="calculator">150 - 120</gadget>
<output>30</output>

<gadget id="calculator">600 / 30</gadget>
<output>20</output>

<result>20</result>