It takes 10 days for team A to complete a project alone, and 12 days for team B to complete it alone. How much more efficient is team A than team B?
一项工程甲队单独做需要10天完成，乙队单独做需要12天完成，甲的工作效率比乙多百分之几？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/10) - (1/12)</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">(1/60) / (1/12)</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>