Question 595802
x		Students tickets						
y		asb tickets						
Total	attended							
1	x	+	1	y	=	324	.............1	
								
2.50	x	+	1.25	y	=	645	.............2	
Eliminate	y							
multiply (1)by		-1.25						
Multiply (2) by		1						
-1.25	x		-1.25	y	=	-405	
2.50	x	+	1.25	y	=	645	
Add the two equations								
1.25	x				=	240	
/	1.25							
x	=	192					
plug value of			x	in (1)				
x+y=	324	
192+y=324		
			y	=	324-192			
			y	=	132		
192		Students tickets						
132		asb tickets						
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