SOLUTION: a solution of 63% vinegar is to be mixed with a solution of 28% vinegar to form 70 liters of a 47% solution. How many liters of the 63% solution be used?

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Question 571063: a solution of 63% vinegar is to be mixed with a solution of 28% vinegar to form 70 liters of a 47% solution. How many liters of the 63% solution be used?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
a solution of 63% vinegar is to be mixed with a solution of 28% vinegar to form 70 liters of a 47% solution. How many liters of the 63% solution be used?
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Equation:
0.63x + 0.28(70-x) = 0.47*70
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Multiply thru by 100 to get:
63x + 28*70 - 28x = 47*70
25x = 19*70
x = 53.2 liters (amt of 63% solution needed)
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Cheers,
Stan H.
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