document.write( "Question 1051788: Michelle is making hamburger, using 5lbs of ground beef that is 15% fat and 7lbs of ground beef that is 3% fat. What is total percentage of the fat in the mixture? \n" ); document.write( "

Algebra.Com's Answer #667254 by josmiceli(19441) $\"\"$ $\"About$

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$\"+.15%2A5+=+.75+\"$
\n" ); document.write( " $\"+.03%2A7+=+.21+\"$
\n" ); document.write( " $\"+%28+.75+%2B+.12+%29+%2F+%28+5+%2B+7+%29+=+.87%2F12+\"$
\n" ); document.write( " $\"+.87%2F12+=+.0725+\"$
\n" ); document.write( " $\"+.0725%2A%28100%29+=+7.25+\"$
\n" ); document.write( "The mixture is 7.25% fat
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