To complete a certain task, the time required for A to do it alone is 3 times the time required for B and C to do it together, the time required for B to do it alone is 4 times the time required for A and C to do it together, and the time required for C to do it alone is A and B work together x times the required time, then x = how much.
完成某项工作，A单独做所需时间是B与C共同做所需时间的3倍，B单独做所需时间是A与C共同做所需时间的4倍，C单独做所需时间是A与B共同做所需时间的x倍，则x=多少．
<gadget id="calculator">9 / 11</gadget>
<output>9/11 = around 0.818182</output>

<result>9/11 = around 0.818182</result>