Question 479998
sugar cost x/kg
Tea cost y/kg

11x+6y=13.30.......1
6x+11y=17.30....2

11	x	+	6	y	=	13.3	.............1	
6	x	+	11	y	=	17.3	.............2	
Eliminate y								
multiply (1)by 		-11						
Multiply (2) by		6						
-121	x		-66	y	=	-146.3		
36	x	+	66	y	=	103.8		
Add the two equations								
-85	x				=	-42.5		
/	-85							
x	=	0.50					
plug value of 			x	in (1)				
11	x	+	6	y	=	13.3		
5.5		+	6	y	=	13.3		
			6	y	=	13.3		-5.5
			6	y	=	7.8		
				y	=	1.30	

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