document.write( "Question 105146: There were 1500 people at a high school football game. Student tickets were $2.00 and adult tickets were $3.50. The total receipts for the game were $3825. How many students bought tickets?
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Algebra.Com's Answer #76516 by doukungfoo(195)\"\" \"About 
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Lets call the number of student tickets x
\n" ); document.write( "and the number of adult tickets y
\n" ); document.write( "Now we are told that 1500 people attended the game. So...
\n" ); document.write( "x + y = 1500
\n" ); document.write( "Now we are also told that the total receipts for the game were $3825 and student tickets cost $2.00 and adult tickets cost $3.50. So...
\n" ); document.write( "2x + 3.5y = 3825
\n" ); document.write( "Ok so we have a system of equations:
\n" ); document.write( "x + y = 1500
\n" ); document.write( "AND
\n" ); document.write( "2x + 3.5y = 3825
\n" ); document.write( "We can solve for x and y by using the substitution method.
\n" ); document.write( "Start with the first equation and set it equal to x
\n" ); document.write( "x + y = 1500
\n" ); document.write( "x = 1500 - y
\n" ); document.write( "Now since we have shown that x is equal to 1500-y we can substitute 1500-y for x in the second equation
\n" ); document.write( "2x + 3.5y = 3825
\n" ); document.write( "2(1500-y) + 3.5y = 3825
\n" ); document.write( "3000 - 2y + 3.5y = 3825
\n" ); document.write( "3000 + 1.5y = 3825
\n" ); document.write( "1.5y = 825
\n" ); document.write( "y = 550
\n" ); document.write( "Answer: 550 Adults attended the game
\n" ); document.write( "Now use this value for y to solve for x
\n" ); document.write( "x + y = 1500
\n" ); document.write( "x + 550 = 1500
\n" ); document.write( "x = 950
\n" ); document.write( "Answer: 950 Students attended the game
\n" ); document.write( "Check answers in both equations
\n" ); document.write( "x + y = 1500
\n" ); document.write( "950 + 550 = 1500
\n" ); document.write( "1500 = 1500
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\n" ); document.write( "2x + 3.5y = 3825
\n" ); document.write( "2(950) + 3.5(550) = 3825
\n" ); document.write( "1900 + 1925 = 3825
\n" ); document.write( "3825 = 3825\r
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