4 liters of type A alcohol, 6 liters of type B alcohol, the mixed alcohol contains 62% pure alcohol. If the amount of alcohol A is the same as that of alcohol B, then the mixed alcohol contains 61% pure alcohol. What is the percentage of pure alcohol in alcohol.
甲种酒精4升，乙种酒精6升，混合成的酒精含纯酒精62%．如果甲种酒精和乙种酒精一样多，那么混合成的酒精含纯酒精61%．甲种酒精中含纯酒精的百分数是多少．
<gadget id="calculator">61 / 100</gadget>
<output>61/100 = around 0.61</output>

<gadget id="calculator">(61/100) * 2</gadget>
<output>61/50 = around 1.22</output>

<gadget id="calculator">4 + 6</gadget>
<output>10</output>

<gadget id="calculator">62 / 100</gadget>
<output>31/50 = around 0.62</output>

<gadget id="calculator">10 * (31/50)</gadget>
<output>31/5 = around 6.2</output>

<gadget id="calculator">4 + 4</gadget>
<output>8</output>

<gadget id="calculator">8 * (61/100)</gadget>
<output>122/25 = around 4.88</output>

<gadget id="calculator">(31/5) - (122/25)</gadget>
<output>33/25 = around 1.32</output>

<gadget id="calculator">(33/25) / 2</gadget>
<output>33/50 = around 0.66</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(33/50) * 1</gadget>
<output>33/50 = around 0.66</output>

<gadget id="calculator">(61/50) - (33/50)</gadget>
<output>14/25 = around 0.56</output>

<result>14/25 = around 0.56</result>