document.write( "Question 567763: a tank contains 60 gallons of 50% solution of glycerine and water. what volume of water must be added to the solution to reduce the glycerine concentration to 12%? \n" ); document.write( "
Algebra.Com's Answer #366685 by stanbon(75887)\"\" \"About 
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a tank contains 60 gallons of 50% solution of glycerine and water. what volume of water must be added to the solution to reduce the glycerine concentration to 12%?
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\n" ); document.write( "Equation:
\n" ); document.write( "glyc + glyc = glyc
\n" ); document.write( "0.50*60 + 0*x = 0.12(60+x)
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\n" ); document.write( "multiply thru by 100 to get:
\n" ); document.write( "50*60 = 12*60 + 12x
\n" ); document.write( "12x = 38*60
\n" ); document.write( "x = 38*5
\n" ); document.write( "x = 190 gallons (amt. of water to add)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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