SOLUTION: A chemist wishes to make 3 liters of a 7% acid solution by mixing a 9% acid solution and a 4% acid solution. How many liters of each solution should the chemist use?
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Question 926059: A chemist wishes to make 3 liters of a 7% acid solution by mixing a 9% acid solution and a 4% acid solution. How many liters of each solution should the chemist use? Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! x = liters of 9%
y = liters of 4%
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9x + 4y = 7*3
x + y = 3
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put the system of linear equations into standard form
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9x + 4y = 21
x + y = 3
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answer:
x = liters of 9% = 1.8
y = liters of 4% = 1.2
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