document.write( "Question 900616: How much of a 40% alcohol solution must be mixed with 50 gallons of an 18% alcohol solution to obtain a solution that is 30% alcohol? \n" ); document.write( "
Algebra.Com's Answer #546071 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! 0.4*x+0.18*50=0.3(50+x) \n" ); document.write( "0.4*x+9=15+0.3x \n" ); document.write( "0.4x-0.3x=15-9 \n" ); document.write( "0.1x=6 \n" ); document.write( "x=60 gallons of 40% alcohol solution \n" ); document.write( "check \n" ); document.write( "0.4*60+0.18*50=0.3(50+60) \n" ); document.write( "24+9=0.3(110) \n" ); document.write( "33=33 \n" ); document.write( "ok \n" ); document.write( " \n" ); document.write( " |