document.write( "Question 236560: To produce a 16% alcohol solution, a chemist mixes a 20% alcohol solution and a 14% alcohol solution. How much 20% solution and how much 14% solution must be used to product 15 L of a 16% alcohol solution?\r
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document.write( "Would really appreciate any help. I am studying for an exam tomorrow. Thanks. \n" );
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Algebra.Com's Answer #174111 by checkley77(12844) ![]() You can put this solution on YOUR website! .20x+.14(15-x)=.16*15 \n" ); document.write( ".20x+2.1-.14x=2.4 \n" ); document.write( ".06x=2.4-2.1 \n" ); document.write( ".06x=.3 \n" ); document.write( "x=.3/.06 \n" ); document.write( "x=5 L. of 20% alcohol is used. \n" ); document.write( "15-5=10 L. of 14% alcohol is used. \n" ); document.write( "Proof: \n" ); document.write( ".20*5+.14*10=2.4 \n" ); document.write( "1+1.4=2.4 \n" ); document.write( "2.4=2.4 \n" ); document.write( " |