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)\"\" \"About 
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%
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\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
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