There is an inlet pipe and an outlet pipe in the school garden pool. The empty pool can be filled by only opening the water inlet pipe for 10 minutes, and the full pool can be drained by only opening the water pipe for 15 minutes. Now the water stored in the pool accounts for (1/6) of the volume of the pool. Opening both pipes at the same time takes at least a few minutes to fill the pool?
学校花园水池里装有一个进水管和一个出水管．单开进水管10分钟可以把空池注满，单开出水管15分钟可以把满池水放完．现在池内储水占水池容积的(1/6)．同时打开两管至少用几分钟才能把水池注满？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

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

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(1/10) - (1/15)</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">(5/6) / (1/30)</gadget>
<output>25</output>

<result>25</result>