In order to resettle the affected people, a town urgently needs 6,000 disaster relief tents. According to the production scale of factory A, it can be completed in 30 days, while the person in charge of factory B said that it can be completed in 15 days. Due to the urgency of the disaster, the local government decided to have the two factories process together, so how many days can the tent production task be completed?
为安置受灾群众，某乡镇急需6000顶救灾帐篷．根据甲厂的生产规模30天可以完成，乙厂的负责人则表示只要15天就能完成．由于灾情紧急，当地政府决定由两厂一起加工，这样多少天就能完成帐篷生产任务？
<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

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

<gadget id="calculator">(1/30) + (1/15)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 / (1/10)</gadget>
<output>10</output>

<result>10</result>