document.write( "Question 431111: how many grams of alcohol must be added to 40 grams of a 15% alcohol solution to obtain a 20% alcohol solution \n" ); document.write( "
Algebra.Com's Answer #307637 by jorel1380(3719)![]() ![]() You can put this solution on YOUR website! 1.0x+40(.15)=.20(40+x) \n" ); document.write( "x+6=8+.2x \n" ); document.write( ".8x=2 \n" ); document.write( "x=2/.8=2.5 \n" ); document.write( "You must add 2.5 gms of pure alcohol to get the mix.. \n" ); document.write( " |