document.write( "Question 669505: Courtney wants to mix 30% alcohol with 70% alcohol to form 10 liters of 40% alcohol. How many liters of each should she use? \n" ); document.write( "
Algebra.Com's Answer #416411 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Courtney wants to mix 30% alcohol with 70% alcohol to form 10 liters of 40% alcohol. How many liters of each should she use? \n" ); document.write( "----- \n" ); document.write( "Equation: \n" ); document.write( "alc + alc = alc \n" ); document.write( "---- \n" ); document.write( "0.30x + 0.70(10-x) = 0.40*10 \n" ); document.write( "30x + 70*10 - 70x = 40*10 \n" ); document.write( "--- \n" ); document.write( "-40x = -30*10 \n" ); document.write( "---- \n" ); document.write( "x = (3/4)10 \n" ); document.write( "--- \n" ); document.write( "x = 7.5 liters (amt. of 30% solution needed) \n" ); document.write( "---- \n" ); document.write( "10-x = 2.5 liters (amt. of 70% solution needed) \n" ); document.write( "========================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |