document.write( "Question 348452: Students sold peanut butter cookies for $6.50 a dozen. They sold chocolate chip cookies for $9.00 a dozen. They sold 85 dozen more peanut butter cookies than chocolate chip cookies. The total dollar amount sold was 4055.50. How many dozen peanut butter cookies were sold? \n" ); document.write( "
Algebra.Com's Answer #249108 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
Students sold peanut butter cookies for $6.50 a dozen. They sold chocolate chip cookies for $9.00 a dozen. They sold 85 dozen more peanut butter cookies than chocolate chip cookies. The total dollar amount sold was 4055.50. How many dozen peanut butter cookies were sold?\r
\n" ); document.write( "\n" ); document.write( "Let number of chocolate chip cookies sold be x
\n" ); document.write( "peanut butter cookies sold = x+85.\r
\n" ); document.write( "\n" ); document.write( "..
\n" ); document.write( "peanut butter cookies for $6.50 a dozen.
\n" ); document.write( "chip cookies for $9.00 a dozen
\n" ); document.write( "..
\n" ); document.write( "Total receipts = 4055.50
\n" ); document.write( "9x+6.5(x+85)=4055.50
\n" ); document.write( "9x+6.5x+552.5 =4055.50
\n" ); document.write( "15.5x=4055.50-552.50
\n" ); document.write( "15.5x=3503
\n" ); document.write( "x=3503/15.5
\n" ); document.write( "x= 226 chocolate chip cookies
\n" ); document.write( "226+85 = 311 peanut butter cookies \n" ); document.write( "
\n" );