There are 200 grams of 10% salt water in container A and 100 grams of 15% salt water in container B. Pour an equal amount of water into two containers, A and B, so that the concentration of salt water in the two containers is the same. How many grams of water should be poured into each container?
甲容器中有10%的盐水200克，乙容器中有15%的盐水100克．往甲、乙两个容器分别倒入等量的水，使两个容器中盐水的浓度一样．每个容器应倒入水多少克？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">100 * (3/20) * 200</gadget>
<output>3_000</output>

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

<gadget id="calculator">200 * (1/10) * 100</gadget>
<output>2_000</output>

<gadget id="calculator">3_000 - 2_000</gadget>
<output>1_000</output>

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

<gadget id="calculator">100 * (3/20)</gadget>
<output>15</output>

<gadget id="calculator">20 - 15</gadget>
<output>5</output>

<gadget id="calculator">1_000 / 5</gadget>
<output>200</output>

<result>200</result>