Question 1113199

									 		
$4 	x	Advance tickets									
$5.50 	y	sold at door									
Equation for total investors											
											
	x		-	y	=	15	.............1				
											
Equation for amount raised											
$4 	x	+	5.50	y	=	$440 	.............2				
Eliminate y											
multiply (1)by		5.50									
Multiply (2) by		1									
5.50	x		-5.50	y	=	82.50					
4.00			5.50	y	=	440.00					
Add the two equations											
9.50	x				=	522.50					
/	9.50										
x	=	55.00									
plug value of			x	in (1)							
	x	+	-	y	=	15					
55		+	-	y	=	15					
			-	y	=	-40					
				y=		40					
											
	55	Advance tickets									
	40	at the door  tickets