document.write( "Question 866226: Advance tickets for a local concert sold for eight dollars each. Tickets at the door were $12 each. The revenue from ticket sales were $1120. \r
\n" ); document.write( "\n" ); document.write( "Suppose twice as many advanced tickets were sold as tickets at the door. How many of each type of ticket was sold?
\n" ); document.write( "

Algebra.Com's Answer #522139 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Advance tickets for a local concert sold for eight dollars each. Tickets at the door were $12 each. The revenue from ticket sales were $1120. \r
\n" ); document.write( "\n" ); document.write( "Suppose twice as many advanced tickets were sold as tickets at the door. How many of each type of ticket was sold?
\n" ); document.write( "------
\n" ); document.write( "Quantity Equation:: a = 2d
\n" ); document.write( "Value Equation: 8a + 12d = 1120
\n" ); document.write( "--------------------------------------
\n" ); document.write( "Substitute and solve for \"d\":
\n" ); document.write( "8(2d) + 12d = 1120
\n" ); document.write( "28d = 1120
\n" ); document.write( "d = 40 (# sold at the door)
\n" ); document.write( "---
\n" ); document.write( "a = 2d = 80 (# of advance sold)
\n" ); document.write( "-----------------------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "-----------------------------
\n" ); document.write( "
\n" );