Question 996932
x= 	cost of	adult tickets								
y=	cost of	student tickets								
Total  sold										
7	x	+	11	y	=	234	.............1			
Total value										
14	x	+	4	y	=	234	.............2			
Eliminate	y									
multiply (1)by		-4								
Multiply (2) by		11								
-28	x		-44	y	=	-936				
154	x	+	44	y	=	2574				
Add the two equations										
126	x				=	1638				
/	126									
x	=	13								
plug value of			x	in (1)						
7	x	+	11	y	=	234				
91		+	11	y	=	234				
			11	y	=	234		-91		
			11	y	=	143				
				y	=	13				
x=	13		cost of	adult tickets						
y=	13		cost of	student tickets						
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