document.write( "Question 1112068: It is desired to add sufficient water to 6 liters of alcohol 95% pure to make a mixture 75% pure. How many liters of water are required \n" ); document.write( "

Algebra.Com's Answer #727084 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+x+\"$ = liters of water needed
\n" ); document.write( " $\"+.95%2A6+=+5.7+\"$ liter of alcohol in mixture
\n" ); document.write( "------------------
\n" ); document.write( " $\"+5.7+%2F+%28+x+%2B+6+%29+=+.75+\"$
\n" ); document.write( " $\"+5.7+=+.75%2A%28+x+%2B+6+%29+\"$
\n" ); document.write( " $\"+5.7+=+.75x+%2B+4.5+\"$
\n" ); document.write( " $\"+.75x+=+1.2+\"$
\n" ); document.write( " $\"+x+=+1.6+\"$
\n" ); document.write( "1.6 liters of water needs to be added
\n" ); document.write( "----------------------------------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+5.7+%2F+%28+1.6+%2B+6+%29+=+.75+\"$
\n" ); document.write( " $\"+5.7+%2F+7.6+=+.75+\"$
\n" ); document.write( " $\"+5.7+=+5.7+\"$
\n" ); document.write( "OK \n" ); document.write( "

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