A pool can be filled with water pipes A and B. It takes 12 hours to fill up pipe A alone, and 24 hours to fill up pipe B alone. Now it is required to fill the pool in 10 hours, and the time for pipes A and B to be placed together should be as long as possible. There is little land, so how many hours does it take at least for the two pipes A and B to be put together?
某水池可以用甲、乙两个水管注水，单放甲管需要12小时注满，单放乙管需24小时注满，现在要求10小时注满水池，并且甲乙两管合放的时间尽可能地少，那么甲乙两管合放最少需要多少小时？
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/12) * 10</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 - (5/6)</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>