document.write( "Question 899333: marcia kleinz needs a 20% muriatic acid solution to clean the rust on her pool deck. how many ounces of a 32% muriatic acid solution should marcia mix with 32 ounces of a 17% muriatic acid solution to get a solution that is 20% muriatic acid? \n" ); document.write( "

Algebra.Com's Answer #545319 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+x+\"$ = ounces of 32% solution needed
\n" ); document.write( " $\"+.32x+\"$ = ounces of acid in 32% solution
\n" ); document.write( " $\"+.17%2A32+=+5.44+\"$ ounces of acid in 17% solution
\n" ); document.write( "--------------------
\n" ); document.write( " $\"+%28+.32x+%2B+5.44+%29+%2F+%28+x+%2B+32+%29+=+.2+\"$
\n" ); document.write( " $\"+.32x+%2B+5.44+=+.2%2A%28+x+%2B+32+%29+\"$
\n" ); document.write( " $\"+.32x+%2B+5.44+=+.2x+%2B+6.4+\"$
\n" ); document.write( " $\"+.12x+=+.96+\"$
\n" ); document.write( " $\"+x+=+8+\"$
\n" ); document.write( "8 ounces of 32% solution are needed
\n" ); document.write( "------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+%28+.32x+%2B+5.44+%29+%2F+%28+x+%2B+32+%29+=+.2+\"$
\n" ); document.write( " $\"+%28+.32%2A8+%2B+5.44+%29+%2F+%28+8+%2B+32+%29+=+.2+\"$
\n" ); document.write( " $\"+%28+2.56+%2B+5.44+%29+%2F+40+=+.2+\"$
\n" ); document.write( " $\"+8%2F40+=+.2+\"$
\n" ); document.write( " $\"+8+=+.2%2A40+\"$
\n" ); document.write( " $\"+8+=+8+\"$
\n" ); document.write( "OK
\n" ); document.write( " \n" ); document.write( "

\n" );