document.write( "Question 1154789: ow many ounces of a 10 % alcohol solution must be mixed with 18 ounces of a 15 % alcohol solution to make a 11 % alcohol solution? \n" ); document.write( "

Algebra.Com's Answer #777283 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+x+\"$ = ounces of 10% alcohol needed
\n" ); document.write( "-------------------------------
\n" ); document.write( " $\"+%28+.1x+%2B+.15%2A18+%29+%2F+%28+x+%2B+18+%29+=+.11+\"$
\n" ); document.write( " $\"+.1x+%2B+2.7+=+.11%2A%28+x+%2B+18+%29+\"$
\n" ); document.write( " $\"+.1x+%2B+2.7+=+.11x+%2B+1.98+\"$
\n" ); document.write( " $\"+.01x+=+2.7+-+1.98+\"$
\n" ); document.write( " $\"+.01x+=+.72+\"$
\n" ); document.write( " $\"+x+=+72+\"$
\n" ); document.write( "72 ounces of 10% alcohol are needed
\n" ); document.write( "-----------------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+%28+.1x+%2B+.15%2A18+%29+%2F+%28+x+%2B+18+%29+=+.11+\"$
\n" ); document.write( " $\"+%28+.1%2A72+%2B+.15%2A18+%29+%2F+%28+x+%2B+18+%29+=+.11+\"$
\n" ); document.write( " $\"+%28+7.2+%2B+2.7+%29+%2F+%28+72+%2B+18+%29+=+.11+\"$
\n" ); document.write( " $\"+9.9+%2F+90+=+.11+\"$
\n" ); document.write( " $\"+1.1+%2F+10+=+.11+\"$
\n" ); document.write( " $\"+1.1++=+1.1+\"$
\n" ); document.write( "OK \n" ); document.write( "

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