Students A, B, and C talk to the teacher at the same time. A can finish talking in 10 minutes, B can finish talking in 16 minutes, and C can finish talking in 40 minutes. How should the teacher arrange the conversation.
甲、乙、丙三个同学同时找老师谈话，甲10分钟能谈完，乙16分钟能谈完，丙40分钟能谈完．老师应该怎样安排谈话．
<gadget id="calculator">10 * 3</gadget>
<output>30</output>

<gadget id="calculator">16 * 2</gadget>
<output>32</output>

<gadget id="calculator">30 + 32 + 40</gadget>
<output>102</output>

<result>102</result>