document.write( "Question 907018: I need help solving problems like\r
\n" ); document.write( "\n" ); document.write( "A nurse wishes to add 30 ounces of a 10% solution of benzalkonium Chloride to dilute a 4% solution. How much water should she add?
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Algebra.Com's Answer #550153 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
We have 30 oz of 10% solution
\n" ); document.write( "We want to add some 0% solution to make 4% solution
\n" ); document.write( "0*x+0.1*30=0.04(30+x)
\n" ); document.write( "0*x+3=1.2+0.04x
\n" ); document.write( "0x-0.04x=1.2-3
\n" ); document.write( "-0.04x=-1.8
\n" ); document.write( "x=45 oz of 0% (0) is added to 30 oz at 10%(3) to make 4% of 75 oz(3)
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\n" ); document.write( "0*45+0.1*30=0.04(30+45)
\n" ); document.write( "0+3=0.04(75)
\n" ); document.write( "3=3
\n" ); document.write( "ok
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