document.write( "Question 318274: How many kilograms of water must be evaporated from 8 kg of a 25% salt solution to produce a 40% salt solution? \n" ); document.write( "
Algebra.Com's Answer #227826 by scott8148(6628)\"\" \"About 
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8 kg * 25% = 2 kg salt\r
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\n" ); document.write( "\n" ); document.write( "2 / (8-x) = 40%\r
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\n" ); document.write( "\n" ); document.write( "2 = 3.2 - .4x\r
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\n" ); document.write( "\n" ); document.write( "-1.2 = -.4x\r
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\n" ); document.write( "\n" ); document.write( "3 = x
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