SOLUTION: How much pure alcohol must a nurse add to 10 cm^3 of a 60% alcohol solution to strengthen it to a 90% solution?
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Question 947477: How much pure alcohol must a nurse add to 10 cm^3 of a 60% alcohol solution to strengthen it to a 90% solution?
Found 2 solutions by Alan3354, josmiceli:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
How much pure alcohol must a nurse add to 10 cm^3 of a 60% alcohol solution to strengthen it to a 90% solution?
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Add x cc
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10*60 + x*100 = (10+x)90
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = cm3 of pure alcohol to be added
cm3 of pure alcohol in 60% solution
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30 cm3 of pure alcohol should be added
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check:
OK
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