document.write( "Question 1079829: Julia and Ming are selling pies for a school fundraiser. Customers can buy blueberry pies and blackberry pies. Julia sold 12 blueberry pies and 3 blackberry pies for a total of 144.00. Ming sold 5 blueberry pies and 9 blackberry pies for a total of $215.00. Find the cost each of one blueberry pie and one blackberry pie. \n" ); document.write( "
Algebra.Com's Answer #694106 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
x, Blueberry price
\n" ); document.write( "y, Blackberry price\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"system%2812x%2B3y=144%2C5x%2B9y=215%29\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"system%28x=7%2Cy=20%29\"
\n" ); document.write( "
\n" );