document.write( "Question 995551: Beau wishes to strengthen a mixture from 10% alcohol to 30% alcohol.How much pure alcohol should be added to 7 L of 10% mixture. \n" ); document.write( "
Algebra.Com's Answer #614288 by stanbon(75887)\"\" \"About 
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Beau wishes to strengthen a mixture from 10% alcohol to 30% alcohol.How much pure alcohol should be added to 7 L of 10% mixture.
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\n" ); document.write( "Equation:
\n" ); document.write( "alch + alch = alch
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\n" ); document.write( "0.10*7 + 1*x = 0.30(7+x)
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\n" ); document.write( "10*7 + 100x = 30*7 + 30x
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\n" ); document.write( "70x = 20*7
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\n" ); document.write( "x = 2 L (amt of pure alcohol to add)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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