job is completed by A alone in 10 hours. B’s work efficiency is A’s (5/6), and C’s work efficiency is A’s (5/4). After A and B work together for 3 hours, the rest will be done by If C does it alone, how many hours will it take to complete?
一份工作，甲单独做10小时完成，乙的工作效率是甲的(5/6)，丙的工作效率是甲的(5/4)，先由甲乙合做3小时后，剩下的由丙独做，还要几小时完成？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">(1/10) * (5/6)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/10) + (1/12)</gadget>
<output>11/60 = around 0.183333</output>

<gadget id="calculator">(11/60) * 3</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">1 - (11/20)</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(1/10) * (5/4)</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(9/20) / (1/8)</gadget>
<output>18/5 = around 3.6</output>

<result>18/5 = around 3.6</result>