document.write( "Question 712337: How many ounces of pure bran flakes must be added to 70 ounces of cereal that is 42% bran flakes to produce a mixture that is 59.4% bran flakes? \n" ); document.write( "

Algebra.Com's Answer #437885 by josgarithmetic(39620) $\"\"$ $\"About$

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u = how many ounces of pure bran\r
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\n" ); document.write( "\n" ); document.write( " $\"%28100u%2B70%2A42%29%2F%28u%2B70%29=59.4\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"100u%2B70%2A42=59.4%28u%2B70%29\"$
\n" ); document.write( " $\"100u%2B70%2A42=59.4u%2B59.4%2A70\"$
\n" ); document.write( " $\"100u-59.4u=59.4%2A70-42%2A70\"$
\n" ); document.write( " $\"%28100-59.4%29u=%2859.4-42%2970\"$
\n" ); document.write( " $\"u=70%2859.4-42%29%2F%28100-59.4%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"u=30\"$
\n" ); document.write( "Add 30 ounces of pure bran to the 70 ounces of 42% bran to get 59.4% bran. \n" ); document.write( "

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