Question 562079
6 bagel packages ------- x numbers
12 bagel packages ----------y numbers

x+y =20
6x+12y=168

x	+	y	=	20	.............1
6x	+	12y	=	168	.............2
Eliminate y							
multiply (1)by 		-12					
Multiply (2) by		1					
-12x		-12y	=	-240	
6x		12y	=	168	
Add the two equations							
-6	x				=	-72	
/	-6						
x	=	12.00		OR	12    		
plug value of 			x	in (1)			
1	x	+	1	y	=	20	
12		+	1	y	=	20	
			1	y	=	20-12
			1	y	=	8	
				
6 pack  12 numbers		
12 pack 8 umbers			
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