Question 393544: How many pints of a 9% cleaning solution must be mixed with 4 pints of a 15% cleaning solution to give a 12% solution? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! How many pints of a 9% cleaning solution must be mixed with 4 pints of a 15% cleaning solution to give a 12% solution?
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Equations:
active + active = active
0.09x + 0.15*4 = 0.12(x+4)
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Multiply thru by 100 to get:
9x + 15*4 = 12x + 12*4
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-3x = -3*4
x = 4 pints (amt of 9% solution needed in the mix)
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Cheers,
Stan H.
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