Three porters A, B, and C work in three warehouses with exactly the same conditions and workload at the same time. A takes 10 hours to move the goods, B takes 12 hours, and C takes 15 hours. The next day, the three went to two larger warehouses to move the goods. The workload of the two warehouses was also the same. A was in warehouse A, while B was in warehouse B. C helped A first and then B. After working for 16 hours, they all worked at the same time. After the transportation is completed, how long has C been working in warehouse A?
甲、乙、丙三名搬运工同时分别在三个条件和工作量完全相同的仓库工作，搬完货物甲用10小时，乙用12小时，丙用15小时．第二天三人又到两个较大仓库搬运货物，这两个仓库的工作量也相同，甲在A仓库，乙在B仓库，丙先帮甲后帮乙，结果干了16小时后同时搬运完毕，问丙在A仓库做了多长时间？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/10) * 16</gadget>
<output>8/5 = around 1.6</output>

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

<gadget id="calculator">(1/12) * 16</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">(8/5) - (4/3)</gadget>
<output>4/15 = around 0.266667</output>

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

<gadget id="calculator">(4/15) / (1/15)</gadget>
<output>4</output>

<gadget id="calculator">16 - 4</gadget>
<output>12</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<result>6</result>