Xiao Ming and Xiao Qiang set off from the school to the camp at the same time, while the teacher set off from the camp back to the school. Xiao Ming's speed is 80 meters per minute, and Xiao Qiang's speed is 60 meters per minute. The teacher and Xiao Ming respectively 80 and 96 minutes after departure , Xiaoqiang met. Q: What is the speed of the teacher?
小明、小强二人同时从学校出发去营地，同时老师从营地出发回学校，小明的速度为每分钟80米，小强的速度为每分钟60米，老师在出发后80分钟、96分钟分别和小明、小强相遇．问：老师的速度是多少？
<gadget id="calculator">80 - 60</gadget>
<output>20</output>

<gadget id="calculator">96 - 80</gadget>
<output>16</output>

<gadget id="calculator">20 / 16</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">80 * (5/4)</gadget>
<output>100</output>

<gadget id="calculator">100 - 60</gadget>
<output>40</output>

<result>40</result>