The distance between the school and the Children's Palace is 1,200 meters. The two brothers set off from the school to the Children's Palace at the same time. The elder brother walked 65 meters per minute, and the younger brother walked 55 meters per minute. The elder brother returned immediately after arriving at the Children's Palace. He met his younger brother on the way. How long did it take to meet in total?
学校和少年宫之间的距离是1200米，兄弟两人同时从学校出发去少年宫，哥哥每分钟走65米，弟弟每分钟走55米，哥哥到达少年宫后立即返回，途中与弟弟相遇，从出发到相遇一共需要多少时间？
<gadget id="calculator">65 + 55</gadget>
<output>120</output>

<gadget id="calculator">2 / 120</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">1_200 * (1/60)</gadget>
<output>20</output>

<result>20</result>