[計量] Big Book 計量一題請教
By weight, liquid A makes up 7.0 percent of solution I and 14.5 percent of
solution II. If 3 grams of solution I is mixed with 2 grams of solution II,
then liquid A accounts for what percent of the weight of the resulting
solution?
不是很清楚題目意思，還有請問這題的解法大概是如何? 感謝!!
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