document.write( "Question 71575: How many liters of a 40% alcohol solution should be added to 40 liters of a 10% alcohol solution to obtain a 20% alcohol solution. \n" ); document.write( "
Algebra.Com's Answer #51188 by stanbon(75887)\"\" \"About 
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How many liters of a 40% alcohol solution should be added to 40 liters of a 10% alcohol solution to obtain a 20% alcohol solution.
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\n" ); document.write( "40% solution DATA:
\n" ); document.write( "Let amt of solution be \"x\" liters; Amt of alcohol is 0.40x liters
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\n" ); document.write( "10% solution DATA:
\n" ); document.write( "Amt is 40 liters; amt of alcohol is 0.10(40)= 4 liters
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\n" ); document.write( "20% solution DATA:
\n" ); document.write( "Amt is \"x+40\" liters; amt of alcohol is 0.20(x+40)= 0.20x+8 liters
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\n" ); document.write( "EQUATION:
\n" ); document.write( "alcohol + alcohol = alcohol
\n" ); document.write( "0.40x+4 = 0.20x+8
\n" ); document.write( " 0.20x=4
\n" ); document.write( "x=20 liters (amt of 40% solution that must be added)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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