travels from A to B while B travels from B to A. After 40 minutes of driving, the two cars meet on the way. After A arrives at point B, he immediately turns back to point A. After driving for 1 hour, A catches up with car B on the way. How many minutes will it take for B to reach point A?
甲从A地开往B地，同时乙从B地开往A地．开出40分钟后两车途中相遇，甲到达B地后马上折回往A地，开出1小时后，甲在途中追上乙车，乙还需多少分钟后到达A地？
<gadget id="calculator">60 - 40</gadget>
<output>20</output>

<gadget id="calculator">40 + 40 + 20</gadget>
<output>100</output>

<gadget id="calculator">100 / 20</gadget>
<output>5</output>

<gadget id="calculator">20 / 5</gadget>
<output>4</output>

<gadget id="calculator">40 - 4</gadget>
<output>36</output>

<gadget id="calculator">36 * 5</gadget>
<output>180</output>

<result>180</result>