document.write( "Question 271287: How many liters of a 40% antifreeze solution must be mixed with 5 liters of a 70% antifreeze solution to make a mixture that is 60% antifreeze?\r
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document.write( "I can't figure out how to set this up. \n" );
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Algebra.Com's Answer #198629 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! How many liters of a 40% antifreeze solution must be mixed with 5 liters of a 70% antifreeze solution to make a mixture that is 60% antifreeze? \n" ); document.write( "------------------------- \n" ); document.write( "Equation: \n" ); document.write( "alcohol + alcohol = alcohol \n" ); document.write( "0.40x + 0.70*5 = 0.60(x+5) \n" ); document.write( "------ \n" ); document.write( "Multiply thru by 100 \n" ); document.write( "40x + 70*5 = 60x + 60*5 \n" ); document.write( "-20x = -10*5 \n" ); document.write( "x = 2.5 liters (amt. of 40% solution needed in the mixture) \n" ); document.write( "================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |