document.write( "Question 577726: How many ounces of pure bran flakes must be added to 50 oz of cereal that is 40% bran flakes to produce a mixture that is 50% bran flakes? \n" ); document.write( "
Algebra.Com's Answer #370275 by richwmiller(17219)\"\" \"About 
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(50*.4)+x=.5(50+x)
\n" ); document.write( " 20+x=25+.5x
\n" ); document.write( ".5x=5
\n" ); document.write( "x=10
\n" ); document.write( "10 ounces of pure bran flakes.
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