There is 200kg of 10% sugar water in the first container, and 120kg of 15% sugar water in the second container. Pour the same amount of water into the two containers so that the concentration of sugar water in the two containers is the same. How many kilograms of water should be poured into each container?
第1个容器里有10%的糖水200kg，第2个容器里有15%的糖水120kg，往两个容器里倒入等量的水，使两个容器中糖水的浓度一样．每个容器里倒入的水应是多少千克？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">120 * (3/20) * 200</gadget>
<output>3_600</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">200 * (1/10) * 120</gadget>
<output>2_400</output>

<gadget id="calculator">3_600 - 2_400</gadget>
<output>1_200</output>

<gadget id="calculator">200 * (1/10)</gadget>
<output>20</output>

<gadget id="calculator">120 * (3/20)</gadget>
<output>18</output>

<gadget id="calculator">20 - 18</gadget>
<output>2</output>

<gadget id="calculator">1_200 / 2</gadget>
<output>600</output>

<result>600</result>