SOLUTION: how much dextrose 70% should be mixed with 500 mL of dextrose 10% to make a 45% dextrose solution?? Im coming up with 272 Ml of the 70%. My book says it should be 700 mL..Typo??

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Question 847314: how much dextrose 70% should be mixed with 500 mL of dextrose 10% to make a 45% dextrose solution??
Im coming up with 272 Ml of the 70%. My book says it should be 700 mL..Typo??
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
how much dextrose 70% should be mixed with 500 mL of dextrose 10% to make a 45% dextrose solution??
Im coming up with 272 Ml of the 70%. My book says it should be 700 mL..Typo??
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Equation:
dex + dex = dex
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0.7x + 0.1*500 = 0.45(x+500)
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70x + 10*500 = 45x + 45*500
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25x = 35*500
x = (7/5)(500)
x = 700 ml (amt. of 70% solution needed)
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Cheers,
Stan H.
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