SOLUTION: A mixture contains one-hundred ounces of glycol and water and is twenty-eight per cent glycol. If the mixture is to be weakened to twenty per cent, how much water must be added?

Question 972607: A mixture contains one-hundred ounces of glycol and water and is twenty-eight per cent glycol. If the mixture is to be weakened to twenty per cent, how much water must be added?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
A mixture contains one-hundred ounces of glycol and water and is twenty-eight per cent glycol. If the mixture is to be weakened to twenty per cent, how much water must be added?
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let x=amt of water to add
28%*100=20%(100+x)
28=20+.20x
0.20x=8
x=40
How much water must be added? 40 ounces
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