A project can be completed in 10 days by A alone and 15 days by B alone. What is the simplest ratio of the work efficiency of A and B?
一项工程甲独做10天完成，乙独做15天完成，甲乙工作效率的最简比是多少
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(1/10) / (1/15)</gadget>
<output>3/2 = around 1.5</output>

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