document.write( "Question 846757: Naomi is making a cleaning solution that is 15% bleach. She has 2 gallons of 40% bleach solution currently to which she will add pure water (0% bleach) to make her cleaning solution. How many gallons of water does she need to add? \n" ); document.write( "

Algebra.Com's Answer #509897 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+w+\"$ = gallons of water she must add
\n" ); document.write( " $\"+.4%2A2+=+.8+\"$ = gallons of bleach in 40% solution
\n" ); document.write( "------------------
\n" ); document.write( " $\"+.8+%2F+%28+2+%2B+w+%29+=+.15+\"$
\n" ); document.write( " $\"+.8+=+.15%2A%28+2+%2B+w+%29+\"$
\n" ); document.write( " $\"+.8+=+.3+%2B+.15w+\"$
\n" ); document.write( " $\"+.15w+=+.5+\"$
\n" ); document.write( " $\"+w+=+3.333+\"$
\n" ); document.write( "She needs to add 3 and 1/3 gallons of water
\n" ); document.write( "---------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+.8+%2F+%28+2+%2B+w+%29+=+.15+\"$
\n" ); document.write( " $\"+.8+%2F+%28+2+%2B+3.333+%29+=+.15+\"$
\n" ); document.write( " $\"+.8+=+.15%2A5.333+\"$
\n" ); document.write( " $\"+.8+=+.8+\"$
\n" ); document.write( "OK \n" ); document.write( "

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