document.write( "Question 507316: how many liters should be drained and replaced with pure antifreeze from a radiator containing 12 liters of 40 percent antifreeze to increase the concentration to 50 percent antifreeze. \n" ); document.write( "
Algebra.Com's Answer #340423 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! how many liters should be drained and replaced with pure antifreeze from a radiator containing 12 liters of 40 percent antifreeze to increase the concentration to 50 percent antifreeze. \n" ); document.write( "---- \n" ); document.write( "alcohol - alcohol + alcohol = alcohol \n" ); document.write( "0.40*12 - 0.40x + 1.0x = 0.50*12 \n" ); document.write( "----- \n" ); document.write( "Multiply thru by 100 to get: \n" ); document.write( "40*12 - 40x + 100x = 50*12 \n" ); document.write( "60x = 10*12 \n" ); document.write( "x = 2 liters (amt. to be replaced by pure antifreeze) \n" ); document.write( "============== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |