SOLUTION: determine the percentage of a solution obtained by mixinng 300g of a 25% and 400g of a 40% solution

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Question 727364: determine the percentage of a solution obtained by mixinng 300g of a 25% and 400g of a 40% solution
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
How much mass of dissolved matter?
How much mass of resulting solution?
Ratio !

Dissolved stuff, 300%2A0.25%2B400%2A0.40 grams.
Solution finished, 300%2B400 grams.
Percent, ratio*100.