document.write( "Question 412277: John paid $11.75 for 1 large box of popcorn and 2 large soda; Peter paid $13.00 for 2 large boxes of popcorn and 1 large soda. How much does 1 large box of popcorn cost? \n" ); document.write( "
Algebra.Com's Answer #289694 by ewatrrr(24785)\"\" \"About 
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\n" ); document.write( "Hi
\n" ); document.write( "Let x and y represent the cost of popcorn and soda respectively
\n" ); document.write( "Question states***
\n" ); document.write( " x + 2y = $11.75
\n" ); document.write( " 2x + y = $13.00\r
\n" ); document.write( "\n" ); document.write( " -2x -4y = -23.50
\n" ); document.write( " 2x + y = 13.00
\n" ); document.write( " -3y = -10.50
\n" ); document.write( " y = $3.50, cost of a soda
\n" ); document.write( " x = 11.75-2y = $4.75, the cost of popcorn\r
\n" ); document.write( "\n" ); document.write( "CHECKING our Answer***
\n" ); document.write( " 2*$3.75 + $3.50 = $9.50 + $3.50 = $13.00
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