document.write( "Question 219892: Please help me with this problem:\r
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document.write( "How many gallons of a 70% antifreeze solution must be mixed with 70 gallons of 25% antifreeze to get a mixture that is 60% antifreeze? Use the six step method \n" );
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Algebra.Com's Answer #165245 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! How many gallons of a 70% antifreeze solution must be mixed with 70 gallons of 25% antifreeze to get a mixture that is 60% antifreeze? Use the six step method \n" ); document.write( "--------------------------------------------- \n" ); document.write( "Equation: \n" ); document.write( "alcohol + alcohol = alcohol \n" ); document.write( "0.70x + 0.25*70 = 0.60(x+70) \n" ); document.write( "--------------------------------- \n" ); document.write( "Multiply thru by 100 to get: \n" ); document.write( "70x + 25*70 = 60x + 60*70 \n" ); document.write( "10x = 35*70 \n" ); document.write( "x = 35*7 \n" ); document.write( "x = 245 gallons (amt of 70% solution needed in the mixture) \n" ); document.write( "======================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |