document.write( "Question 433981: 10 gallons of a 15.0% alcohol solution are to be mixed with a 28.0% alcohol solution to make a 20.0% alcohol solution. How many gallons of a 28.0% alcohol must be used? How many gallons of a 20.0% alcohol solution are made? \n" ); document.write( "
Algebra.Com's Answer #300754 by mananth(16946)![]() ![]() You can put this solution on YOUR website! ------ Percent ---------------- quantity \n" ); document.write( "Alcohol 15 ----------------10 \n" ); document.write( "Alcohol II 28----------------x \n" ); document.write( "Total 20 ----------------10+x \n" ); document.write( " \n" ); document.write( "15*10+28*x=20(10+x) \n" ); document.write( "150+28x =200+20 x \n" ); document.write( "28 x - 20 x = 200 - 150 \n" ); document.write( "8x=50 \n" ); document.write( "/8 \n" ); document.write( "x=6.25 gallons 28% Alcohol II \n" ); document.write( "Balance 13.75 gallons 15% alcohol \n" ); document.write( " \n" ); document.write( " |