document.write( "Question 1109120: Collin bought 3 cookies and 5 doughnuts for $12.50. Dana bought 1 cookie and 1 doughnut for $3.00. How much is a cookie? a doughnut? \n" ); document.write( "

Algebra.Com's Answer #724122 by josgarithmetic(39630) $\"\"$ $\"About$

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$\"system%283c%2B5d=12.5%2Cc%2Bd=3%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "Use Elimination Method, to start.\r
\n" ); document.write( "\n" ); document.write( " $\"3c%2B5d-3c-3d=12.5-9\"$
\n" ); document.write( " $\"2d=3.5\"$
\n" ); document.write( " $\"d=3.5%2F2\"$
\n" ); document.write( " $\"d=1.75\"$ \r
\n" ); document.write( "\n" ); document.write( ".\r
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