Question 684251
x= 	number of adult tickets							
y=	number of child tickets							
Total tickets sold								
1	x	+	1	y	=	49	.............1	
								
15	x	+	8	y	=	469	.............2	
Eliminate	y							
multiply (1)by		-8						
Multiply (2) by		1						
-8	x		-8	y	=	-392		
15	x	+	8	y	=	469		
Add the two equations								
7	x				=	77		
/	7							
x	=	11						
plug value of			x	in (1)				
1	x	+	1	y	=	49		
11		+		y	=	49		
				y	=	49		-11
				y	=	38		
				y	=	38		
x=	11		number of adult tickets					
y=	38		number of child tickets					
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