document.write( "Question 477899: I need help setting up the equations. I almost have it I think, but I want to make sure.\r
\n" ); document.write( "\n" ); document.write( "Solution A is 20% acid. Find the amount of Solution A and the amount of pure water needed to make 5 liters of a new solution that is 18% acid.\r
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Algebra.Com's Answer #327472 by nerdybill(7384)\"\" \"About 
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Solution A is 20% acid. Find the amount of Solution A and the amount of pure water needed to make 5 liters of a new solution that is 18% acid.
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\n" ); document.write( "Let x = amount (liters) of 20% acid
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\n" ); document.write( "5-x = amount (liters) of water
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\n" ); document.write( ".20x +0(5-x) = .18(5)
\n" ); document.write( ".20x = .18(5)
\n" ); document.write( ".20x = .9
\n" ); document.write( "x = 4.5 liters of 20% acid
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\n" ); document.write( "Amount of pure water:
\n" ); document.write( "5-x = 5-4.5 = .5 liters of pure water
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