A project can be completed by A alone in 12 hours, and by B alone in 24 hours. Now it is required to complete it in 10 hours, and the time for A and B to cooperate is as little as possible. Hour.
一项工程由甲独做12小时完成，由乙独做24小时完成，现在要求10小时做完，且甲、乙两人合作的时间尽可能地少，那么甲、乙两人合作最少需多少小时．
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / 24</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">(1/6) / (1/24)</gadget>
<output>4</output>

<result>4</result>