document.write( "Question 932038: 20 gallons of 70%v/v alcohol and 30 gallons of 50% v/v alcohol are mixed. calculate the proof strength in the mixture. \n" ); document.write( "
Algebra.Com's Answer #566004 by ptaylor(2198)\"\" \"About 
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let x=per cent of alcohol in the finat mixture
\n" ); document.write( "amount of pure alcohol in the 20 gal=(0.7)(20)=14 gal
\n" ); document.write( "amount of pure alcohol in the 30 gal=(0.5)(30)=15 gal
\n" ); document.write( "Sooooo there's 29 gal. of pure alcohol in the 50 gal mixture
\n" ); document.write( "Our equation to solve then is: 50x=29
\n" ); document.write( "x=0.58 or 58%
\n" ); document.write( "hope this helps---ptaylor
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