<PRE><B>Question 903404</B>
seven and one half liter of 90% alcohol was mixed to 5 liter of 70% alcohol .
 what is the ratio of 90% to 70% alcohol in the mixture?
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0.9(7.5) = 6.75 liters of alcohol
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0.70(5) = 3.5 liters of alcohol
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ratio = 6.75:3.5
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Cheers,
Stan H.</PRE>