Question 501601
cinnamon tea	x	$/kg						
spice tea	y	$/kg						
								
12	x	+	4	y	=	42	.............1	
16	x	+	8	y	=	64	.............2	
Eliminate y								
multiply (1)by 		-2						
Multiply (2) by		1						
-24	x		-8	y	=	-84		
16	x		8	y	=	64		
Add the two equations								
-8	x				=	-20		
/	-8							
x	=	2.50				
plug value of 			x	in (1)				
12	x	+	4	y	=	42		
30		+	4	y	=	42		
			4	y	=	42		-30
			4	y	=	12		
				y	=	3.00		
cinnamon tea	2 1/2	$/kg						
spice tea	3    	$/kg						
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