Question 172141: How many quarts of a 10% anti-freeze solution must be mixed with 16 quarts of a 40% anti-freeze solution to make a 30% solution? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! How many quarts of a 10% anti-freeze solution must be mixed with 16 quarts of a 40% anti-freeze solution to make a 30% solution?
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Anti-freeze equation:
afreeze + afreeze = afreeze
0.10x + 0.40*16 = 0.30(x+16)
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Multiply thru by 100 to get:
10x + 40*16 = 30x + 30*16
20x = 10*16
x = 8 quarts (amt. of 10% solution needed for the mixtue)
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Cheers,
Stan H.
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