document.write( "Question 25646: Tickets to the Valentine Dance cost $3 per person or $5 per couple. If $475 worth of tickets were sold and 180 people attended the dance, how many couples were there? \n" ); document.write( "
Algebra.Com's Answer #13750 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Let number of couples be \"x\".
\n" ); document.write( "So, number of couple-people is 2x.
\n" ); document.write( "Then, number of single-people is 180-2x.
\n" ); document.write( "Value of couple-people tickets is 5(x)
\n" ); document.write( "Value of single-people tickets is 3(180-2x)=540-6x
\n" ); document.write( "EQUATION:
\n" ); document.write( " Value + Value = 475 dollars
\n" ); document.write( " 5x+540-6x=475
\n" ); document.write( " -x=-65
\n" ); document.write( " x=65 (number of couples)\r
\n" ); document.write( "\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "
\n" );