document.write( "Question 578063: how many ounces of a 15% alcohol solution must be mixed with 4 ounces of a 20% alcohol solution to make a 17% alcohol solution \n" ); document.write( "

Algebra.Com's Answer #370494 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+x+\"$ = ounces of 15% alcohol solution needed
\n" ); document.write( " $\"+.2%2A4+=+.8+\"$ ounces of alcohol in 20% solution
\n" ); document.write( " $\"+.15x+\"$ = ounces of alcohol in 15% solution
\n" ); document.write( "-----------
\n" ); document.write( " $\"+%28+.15x+%2B+.8+%29+%2F+%28+x+%2B+4+%29+=+.17+\"$
\n" ); document.write( " $\"+.15x+%2B+.8+=+.17%2A%28+x+%2B+4+%29+\"$
\n" ); document.write( " $\"+.15x+%2B+.8+=+.17x+%2B+.68+\"$
\n" ); document.write( " $\"+.02x+=+.12+\"$
\n" ); document.write( " $\"+x+=+6+\"$
\n" ); document.write( "6 ounces of 15% alcohol solution are needed
\n" ); document.write( "check:
\n" ); document.write( " $\"+%28+.15%2A6+%2B+.8+%29+%2F+%28+6+%2B+4+%29+=+.17+\"$
\n" ); document.write( " $\"+%28+.9+%2B+.8+%29+%2F+10+=+.17+\"$
\n" ); document.write( " $\"+1.7%2F10+=+.17+\"$
\n" ); document.write( " $\"+1.7+=+1.7+\"$
\n" ); document.write( "OK \n" ); document.write( "

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