document.write( "Question 482939: A chemist has 400g of salt solution that is 10% salt. How many grams of 20% salt solution must be added to obtain a 12% solution of salt? \n" ); document.write( "
Algebra.Com's Answer #330503 by jorel1380(3719)\"\" \"About 
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400x.10=40
\n" ); document.write( "40+n(.2)=.12(400+n)
\n" ); document.write( "40+.2n=48+.12n
\n" ); document.write( ".08n=8
\n" ); document.write( "n=8/.08
\n" ); document.write( "n=100
\n" ); document.write( "The chemist needs 100g of 20% solution for his mixture..
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