document.write( "Question 900583: A butcher has some hamburger that is 24% fat and some that is 21% fat. How many pounds of each should be mixed to make 87 lb of hamburger that is 22% fat? \r
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Algebra.Com's Answer #546032 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! a+b=87, \n" ); document.write( "0.24*a+0.21*b=0.22*87 \n" ); document.write( "a=87-b \n" ); document.write( "0.24*(87-b)+0.21*b=19.14 \n" ); document.write( "20.88-0.24b+0.21*b=19.14 \n" ); document.write( "-0.03*b=-1.74 \n" ); document.write( "b=58 \n" ); document.write( "a=87-b \n" ); document.write( "a=29 lbs at 24% b=58 lbs at 21% \n" ); document.write( "check \n" ); document.write( "0.24*29+0.21*58=0.22*87 \n" ); document.write( "6.96+12.18=19.14 \n" ); document.write( "19.14=19.14 \n" ); document.write( "ok\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |