Question 876452
x= 	number of 	type A						
y=	number of 	type B						
 								
1	x	+	1	y	=	60	.............1	
								
40	x	+	50	y	=	2580	.............2	
Eliminate	y							
multiply (1)by		-50						
Multiply (2) by		1						
-50	x		-50	y	=	-3000		
40	x	+	50	y	=	2580		
Add the two equations								
-10	x				=	-420		
/	-10							
x	=	42      						
plug value of			x	in (1)				
1	x	+	1	y	=	60		
42		+		y	=	60		
				y	=	60		-42
				y	=	18		
				y	=	18		
x=	42		number of 	type A				
y=	18		number of 	type B				
m.ananth@hotmail.ca