document.write( "Question 83243: Don runs a charity fruit sale, selling boxes of oranges for $11 and boxes of grapefruit for $10. If he sold a total of 762 boxes and took in $8125 in all, then how many boxes of oranges did he sell? \n" ); document.write( "

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Don runs a charity fruit sale, selling boxes of oranges for $11 and boxes of grapefruit for $10. If he sold a total of 762 boxes and took in $8125 in all, then how many boxes of oranges did he sell?
\n" ); document.write( "# of Boxes of Oranges = x
\n" ); document.write( "# of Boxes of Grapefruit = y
\n" ); document.write( "x + y = 762 or x = 762 - y
\n" ); document.write( "Plug:
\n" ); document.write( "11x + 10y = 8125
\n" ); document.write( "11(762 - y) + 10y = 8125
\n" ); document.write( "8382 - 11y + 10y = 8125
\n" ); document.write( "257 = y
\n" ); document.write( "x = 762 - y = 762 - 257 = 505
\n" ); document.write( "257 boxes of grapefruit
\n" ); document.write( "505 boxes of oranges \n" ); document.write( "

\n" );