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?
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #76516 by doukungfoo(195)![]() ![]() You can put this solution on YOUR website! 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 \n" ); document.write( "------------ \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 \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |