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)![]() ![]() ![]() 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( " |