Container A contains 4 kg of salt water containing 15% salt, and container B contains 6 kg of salt water containing 10% salt. Mix the brine from the two containers together, what is the salt content?
甲容器盛有4千克含盐15%的盐水，乙容器盛有6千克含盐10%的盐水．把两个容器的盐水混在一起，含盐率是多少？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">4 * (3/20)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/5) + (3/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">4 + 6</gadget>
<output>10</output>

<gadget id="calculator">(6/5) / 10</gadget>
<output>3/25 = around 0.12</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(3/25) * 1</gadget>
<output>3/25 = around 0.12</output>

<result>3/25 = around 0.12</result>