A and B go to the station from their work at the same time. A travels 20 kilometers per hour by bicycle, and B travels 30 kilometers per hour by car. As a result, A arrives (1/12) hours later than B. How much does the unit arrive at the station? rice.
甲、乙二人同时从单位去车站，甲骑自行车每小时行20千米，乙乘汽车每小时行30千米，结果甲比乙晚到了(1/12)小时，单位到车站共多少千米．
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">(1/20) - (1/30)</gadget>
<output>1/60 = around 0.016667</output>

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

<result>5</result>