How many grams of water is added to 60 grams of salt to obtain 15% salt water?
60克盐加上多少克水得含盐率15%的盐水．
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">60 / (3/20)</gadget>
<output>400</output>

<gadget id="calculator">400 - 60</gadget>
<output>340</output>

<result>340</result>