document.write( "Question 4851: The booster club voted on where they would go for their annual trip. A majority of the club voted to go to a baseball game. They bought 29 tickets. Some of the tickets cost $21 each and some cost $27 each. The total cost of all the tickets was $675. How many tickets of each price did they buy? \n" ); document.write( "
Algebra.Com's Answer #2366 by Abbey(339)\"\" \"About 
You can put this solution on YOUR website!
let x = number of tickets @ $21
\n" ); document.write( "21x=amount of money these tickets cost\r
\n" ); document.write( "\n" ); document.write( "Let y= number of tickets @$27
\n" ); document.write( "27y = amount of money these tickets cost\r
\n" ); document.write( "\n" ); document.write( "the total number of tickets purchased:
\n" ); document.write( "x+y=29\r
\n" ); document.write( "\n" ); document.write( "The total value of the tickets purchased
\n" ); document.write( "21x+27y=$675\r
\n" ); document.write( "\n" ); document.write( "rewrite x+y=29 as
\n" ); document.write( "x=29-y\r
\n" ); document.write( "\n" ); document.write( "then substitute it into the value equation:
\n" ); document.write( "21(29-y)+27y=$675\r
\n" ); document.write( "\n" ); document.write( "clear the parentheses:
\n" ); document.write( "609-21y+27y=675
\n" ); document.write( "609+6y=675\r
\n" ); document.write( "\n" ); document.write( "subtract 609 from both sides:
\n" ); document.write( "6y=66
\n" ); document.write( "divide by 6
\n" ); document.write( "y=11\r
\n" ); document.write( "\n" ); document.write( "11 tickets were purchased at $27, so 18 were purchased at $29.\r
\n" ); document.write( "\n" ); document.write( "Check by multiplication
\n" ); document.write( "11*27=297
\n" ); document.write( "18*21=378\r
\n" ); document.write( "\n" ); document.write( "297+378=675
\n" ); document.write( "
\n" );