document.write( "Question 741256: I have made 60 cupcakes. 36 are chocolate and 24 are vanilla. How many more chocolate do I need to make to have 70% of the cupcakes be chocolate. Please show the proportion used.
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Algebra.Com's Answer #451927 by stanbon(75887)\"\" \"About 
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I have made 60 cupcakes. 36 are chocolate and 24 are vanilla. How many more chocolate do I need to make to have 70% of the cupcakes be chocolate. Please show the proportion used.
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\n" ); document.write( "Proportion:
\n" ); document.write( "(# of chocolate)/(total # of cupcakes) = 70/100
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\n" ); document.write( "(36+x)/(60+x) = 70/100
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\n" ); document.write( "36*100 + 100x = 70*60 + 70x
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\n" ); document.write( "30x = 600
\n" ); document.write( "x = 20 (# of chocolate to add)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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