document.write( "Question 547835: how many ounces of pure water must be mixed with 50 ounces of a 15% saline solution to make a solution that is 10% salt? \n" ); document.write( "

Algebra.Com's Answer #356593 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"w\"$ = ounces of pure water needed
\n" ); document.write( "given:
\n" ); document.write( " $\"+.15%2A50+=+7.5+\"$ = ounces of salt in 15% solution
\n" ); document.write( "---------------
\n" ); document.write( " $\"+7.5+%2F+%28+50+%2B+w+%29+=+.1+\"$
\n" ); document.write( " $\"+7.5+=+.1%2A%28+50+%2B+w+%29+\"$
\n" ); document.write( " $\"+7.5+=+5+%2B+.1w+\"$
\n" ); document.write( " $\"+.1w+=+2.5+\"$
\n" ); document.write( " $\"+w+=+25+\"$
\n" ); document.write( "25 ounces of pure water are needed \n" ); document.write( "

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