document.write( "Question 1041589: How much extra-lean hamburger (12% fat) needs to be added to 339 lbs of regular hamburger (27% fat) to make a batch of lean meat (20% fat)??
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Algebra.Com's Answer #656632 by jorel555(1290) $\"\"$ $\"About$

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Let n be the amount of extra-lean meat. Then:
\n" ); document.write( ".12n+.27(339)=.20(339+n)
\n" ); document.write( "91.53=.2n+67.8
\n" ); document.write( ".2n=23.73
\n" ); document.write( "n=118.65
\n" ); document.write( "118.65 lbs of extra-lean meat must be added to 339 lbs of regular meat to make 457.65 lbs of lean meat. ☺☺☺☺ \n" ); document.write( "

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