document.write( "Question 316001: twenty pounds of salt-water solution contains fifteen percent salt. How much water must be added to weaken the solution to twelve percent salt? \n" ); document.write( "

Algebra.Com's Answer #226073 by nerdybill(7384) $\"\"$ $\"About$

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twenty pounds of salt-water solution contains fifteen percent salt. How much water must be added to weaken the solution to twelve percent salt?
\n" ); document.write( ".
\n" ); document.write( "Let x = pounds of water to add
\n" ); document.write( "then
\n" ); document.write( ".15(20) = .12(20+x)
\n" ); document.write( "3 = 2.4 + .12x
\n" ); document.write( ".6 = .12x
\n" ); document.write( ".6/.12 = x
\n" ); document.write( "5 pounds = x \n" ); document.write( "

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