document.write( "Question 611186: How much water do you add to 50 gallons 0f 80% acid solution if you want to end up with a 65% acid solution? \n" ); document.write( "

Algebra.Com's Answer #384857 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+x+\"$ = gallons of water to be added
\n" ); document.write( " $\"+.8%2A50+=+40+\"$ gallons of acid in 80% solution
\n" ); document.write( "-------------
\n" ); document.write( " $\"+40+%2F+%28+x+%2B+50%29+=+.65+\"$
\n" ); document.write( " $\"+40+=+.65%2A%28+x+%2B+50+%29+\"$
\n" ); document.write( " $\"+40+=+.65x+%2B+32.5+\"$
\n" ); document.write( " $\"+.65x+=+7.5+\"$
\n" ); document.write( " $\"+x+=+11.538+\"$
\n" ); document.write( "11.538 gallons of water must be added \n" ); document.write( "

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