document.write( "Question 937551: How much water must be mixed with 5 pints of a solution that is 90% developer to produce mixture that is 13% developer \n" ); document.write( "

Algebra.Com's Answer #570947 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+w+\"$ = pints of water needed
\n" ); document.write( " $\"+.9%2A5+=+4.5+\"$ pints of developer in 90% solution
\n" ); document.write( "----------------
\n" ); document.write( " $\"+4.5+%2F+%28+w+%2B+5+%29+=+.13+\"$
\n" ); document.write( " $\"+4.5+=+.13%2A%28+w+%2B+5+%29+\"$
\n" ); document.write( " $\"+4.5+=+.13w+%2B+.65+\"$
\n" ); document.write( " $\"+.13w+=+3.85+\"$
\n" ); document.write( " $\"+w+=+29.615+\"$
\n" ); document.write( "29.615 pints of water should be added
\n" ); document.write( "-----------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+4.5+%2F+%28+w+%2B+5+%29+=+.13+\"$
\n" ); document.write( " $\"+4.5+%2F+%28+29.615+%2B+5+%29+=+.13+\"$
\n" ); document.write( " $\"+4.5+=+.13%2A34.615+\"$
\n" ); document.write( " $\"+4.5+=+4.49995+\"$
\n" ); document.write( "close enough
\n" ); document.write( " \n" ); document.write( "

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