Teacher Zhao tutors three students, Li Qiang, Zhang Jie, and Wang Fang. The time spent is as follows: Li Qiang needs 8 minutes, Zhang Jie needs 10 minutes, and Wang Fang needs 5 minutes. How to arrange their tutoring sequence can make the three students wait for the total time least? What is the minimum total waiting time in minutes?
赵老师给李强、张杰、王芳三名同学辅导作业，所用的时间如下：李强需要8分钟，张杰需要10分钟，王芳需要5分钟，如何安排他们的辅导顺序，才能使三名同学等候的时间总和最少？最少的等候时间总和是多少分钟．
<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<gadget id="calculator">15 + 16 + 10</gadget>
<output>41</output>

<result>41</result>