document.write( "Question 758194: A nurse has a solution that is 25% alcohol and another that is 50% alcohol. How much of each must he use to make 45 liters of a solution that is 40% alcohol? \n" ); document.write( "
Algebra.Com's Answer #461275 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A nurse has a solution that is 25% alcohol and another that is 50% alcohol. How much of each must he use to make 45 liters of a solution that is 40% alcohol? \n" ); document.write( "------ \n" ); document.write( "Equation: \n" ); document.write( "alch + alch = alch \n" ); document.write( "0.25x + 0.50(45-x) = 0.40*45 \n" ); document.write( "---------- \n" ); document.write( "25x + 50*45 - 50x = 40*45 \n" ); document.write( "----- \n" ); document.write( "-25x = -10*45 \n" ); document.write( "----- \n" ); document.write( "x = 18 liters (amt. of 25% solution needed) \n" ); document.write( "45-x = 27 liters (amt. of 50% solution needed) \n" ); document.write( "============================== \n" ); document.write( " \n" ); document.write( " |