document.write( "Question 419542: A chemist must mix 16 liters of a 40% acid solution with some of a 70% solution to get a 50% solution.How much of the 70% solution should be used. \n" ); document.write( "
Algebra.Com's Answer #293365 by mananth(16946)\"\" \"About 
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percent ---------------- quantity
\n" ); document.write( "40 ---------------- 16
\n" ); document.write( "70 ---------------- x
\n" ); document.write( "50 ---------------- 16+x
\n" ); document.write( "....
\n" ); document.write( "40*16+70 *x=50(16 +x)
\n" ); document.write( "640+70x= 800+50x
\n" ); document.write( "70x-50x= 800-640
\n" ); document.write( "20x=160
\n" ); document.write( "/20
\n" ); document.write( "x=8 liters 70 %
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