document.write( "Question 1016083: To create a chocolate blend, chocolate in two concentrations, 56% cocoa and 28% cocoa, are combined together. If 9 ounces of the 56% chocolate is used, how many ounces of the 28% chocolate must be used to obtain a 40% chocolate blend?
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Algebra.Com's Answer #632453 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
One material quantity is known and the other is unknown.\r
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\n" ); document.write( "\n" ); document.write( "Let x be the ounces of the 28% chocolate.\r
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\n" ); document.write( "\n" ); document.write( "\"chocolate%2Fmixture=40percent\"\r
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\n" ); document.write( "\n" ); document.write( "\"%289%2A56%2B28x%29%2F%28x%2B9%29=40\"\r
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\n" ); document.write( "\"56%2A9%2B28x=40%28x%2B9%29\"
\n" ); document.write( "\"56%2A9%2B28x=40x%2B360\"
\n" ); document.write( "\"40x-28x=56%2A9-360\"
\n" ); document.write( "\"12x=56%2A9-360\"
\n" ); document.write( "\"x=%2856%2A9-120%2A3%29%2F12\"
\n" ); document.write( "\"x=%287%2A8%2A3%2A3-120%2A3%29%2F12\"
\n" ); document.write( "\"x=14%2A3-30\"
\n" ); document.write( "\"highlight%28x=12%29\"\r
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\n" ); document.write( "\n" ); document.write( "See also the lesson, http://www.algebra.com/my/Two-Part-Mixture-with-one-material-quantity-unknown.lesson?content_action=show_dev
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