document.write( "Question 944404: a chemist has two alcohol-in-water: a 20% alcohol solution and a 50% alcohol solution. He needs 12 L of a solution that is 45% alcohol. How many liters of the two starting solutions should he mix \n" ); document.write( "
Algebra.Com's Answer #575859 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! a chemist has two alcohol-in-water: a 20% alcohol solution and a 50% alcohol solution. He needs 12 L of a solution that is 45% alcohol. How many liters of the two starting solutions should he mix \n" ); document.write( "*** \n" ); document.write( "let x=amt of 20% solution to mix \n" ); document.write( "12-x=amt of 50% solution to mix \n" ); document.write( "20%x+50%(12-x)=45%*12 \n" ); document.write( ".20x+6-.50x=5.4 \n" ); document.write( ".30x=.60 \n" ); document.write( "x=2 \n" ); document.write( "12-x=10 \n" ); document.write( "amt of 20% solution to mix=2 liters \n" ); document.write( "amt of 50% solution to mix=10 liters \n" ); document.write( " |