document.write( "Question 145486This question is from textbook College Algebra
\n" ); document.write( ": How many pounds of extra-lean hamburger that is 7% fat must be mixed with 30 pounds of hamburger that is 15% fat to obtain a mixture that is 10% fat? \n" ); document.write( "
Algebra.Com's Answer #106149 by solver91311(24713)\"\" \"About 
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Pounds of extra lean: \"x\"
\n" ); document.write( "Pounds of regular: \"30\"
\n" ); document.write( "Total weight of hamburger after the mixture has been made: \"x%2B30\"\r
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\n" ); document.write( "\n" ); document.write( "Weight of the fat in the extra lean: \"0.07x\"
\n" ); document.write( "Weight of the fat in the regular: \"0.15%2A30=4.5\"
\n" ); document.write( "Weight of the fat in the total: \"0.10%28x%2B30%29\"\r
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\n" ); document.write( "\n" ); document.write( "The weight of the fat in each of the components of the mixture must add up to the weight of the fat in the total mix, so:\r
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\n" ); document.write( "\n" ); document.write( "\"0.07x%2B0.15%2830%29=0.10%28x%2B30%29\". Just solve for \"x\" to get your answer.
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