document.write( "Question 1048933: A chemical company makes two brands of antifreeze. The first brand is
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document.write( "55% pure antifreeze, and the second brand is 95% pure antifreeze. In order to obtain 160 gallons of a mixture that contains 85% pure antifreeze, how many gallons of each brand of antifreeze must be used?\r
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document.write( "I'm assuming x+y=160 and .55+.95=.85 but the answer doesn't make sense to me. \n" );
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Algebra.Com's Answer #664481 by josmiceli(19441)![]() ![]() You can put this solution on YOUR website! Let \n" ); document.write( "Let \n" ); document.write( "----------------------- \n" ); document.write( "(1) \n" ); document.write( "(2) \n" ); document.write( "----------------------------------- \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "---------------------------- \n" ); document.write( "Multiply both sides of (1) by \n" ); document.write( "and subtract (1) from (2) \n" ); document.write( "(2) \n" ); document.write( "(1) \n" ); document.write( "--------------------------- \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "and \n" ); document.write( "(1) \n" ); document.write( "(1) \n" ); document.write( "------------------- \n" ); document.write( "40 gallons of 55% antifreeze are needed \n" ); document.write( "120 gallons of 95% antifreeze are needed \n" ); document.write( "-------------------------------------- \n" ); document.write( "check: \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "(2) \n" ); document.write( "OK \n" ); document.write( " \n" ); document.write( " |