Question 603173
x		cost of each hot dog						
y		cost of each coke						
Total	attended							
3	x	+	1	y	=	4.55	.............1	
								
2.00	x	+	1.00	y	=	3.30	.............2	
Eliminate	y							
multiply (1)by		-1.00						
Multiply (2) by		1.00						
-3.00	x		-1.00	y	=	-4.55		
2.00	x	+	1.00	y	=	3.30		
Add the two equations								
-1.00	x				=	-1.25		
/	-1.00							
x	=	1.25						
plug value of			x	in (1)				
3.00	x	+	1.00	y	=	4.55		
3.75		+	1.00	y	=	4.55		
			1.00	y	=	4.55		-3.75
			1.00	y	=	0.80		
				y	=	0.80		
$1.25		cost of each hot dog						
$0.80		cost of each coke						
m.ananth@hotmail.ca