document.write( "Question 1175630: How much water should be added to 20mL of ​18% alcohol solution to reduce the concentration to 10​%?
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Algebra.Com's Answer #801272 by VFBundy(438)\"\" \"About 
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\"%280.18%2A%2820%29%29%2F%2820+%2B+x%29\" = 0.10
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\n" ); document.write( "\"3.6%2F%2820+%2B+x%29\" = 0.10
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\n" ); document.write( "0.10(20 + x) = 3.6
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\n" ); document.write( "2 + 0.10x = 3.6
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\n" ); document.write( "0.10x = 1.6
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\n" ); document.write( "x = 16
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