SOLUTION: a chemist has 6% and 15% solutions of acid his muvh of each solution should she mix to get 10 liters of a 9% solution

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Question 1055451: a chemist has 6% and 15% solutions of acid his muvh of each solution should she mix to get 10 liters of a 9% solution
Answer by Alan3354(69443) About Me  (Show Source):
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a chemist has 6% and 15% solutions of acid his muvh of each solution should she mix to get 10 liters of a 9% solution
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s = amount of 6%
f = amount of 15%
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s + f = 10
6s + 15f = 10*9