Question 729240
x= 	cost of	adult tickets						
y=	cost of	kid ticket						
Total  sold								
40.00	x	+	26.00	y	=	486.70	.............1	
Total value								
20.00	x	+	31.00	y	=	332.45	.............2	
Eliminate	y							
multiply (1)by		-31.00						
Multiply (2) by		26.00						
-1240.00	x		-806.00	y	=	-15087.70		
520.00	x	+	806.00	y	=	8643.70		
Add the two equations								
-720.00	x				=	-6444.00		
/	-720.00							
x	=	8.95						
plug value of			x	in (1)				
40.00	x	+	26.00	y	=	486.70		
358.00		+	26.00	y	=	486.70		
			26.00	y	=	486.70		-358.00
			26.00	y	=	128.70		
				y	=	4.95		
x=	8.95		cost of	adult tickets				
y=	4.95		cost of	kid ticket				
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