A and B each process a batch of parts. It is known that the total number of parts processed by A is 20% less than the total number of parts processed by B. Then B's work efficiency is equal to A's work efficiency.
甲、乙两人各加工一批零件，已知甲加工的零件总数比乙加工的零件总数少20%，乙完成自己加工任务所用的时间比甲完成加工任务所用时间少(1/6)，则乙的工作效率相当于甲的工作效率的多少．
<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 / (5/6)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) / 1</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(6/5) / (4/5)</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>