there are three kinds of salt water-----A,B and C.mix A with
there are three kinds of salt water-----A,B and C.mix A with B by the proportion of 2:1,
the mixture is 14% concentrated.if A ,B,and C are mixed by the proportion of 1:1:3 ,then the concentrated,how many grams of 70% concentration of
the mixture is 14% concentrated.if A ,B,and C are mixed by the proportion of 1:1:3 ,then the concentrated,how many grams of 70% concentration of
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