Question 445229
Laptop		x	Cost				
Desktop	----------y	Cost				
x-y=1000	.............1	
0.075x+0.085y=915	.............2	
Eliminate y								
multiply (1)by 		0.085
Multiply (2) by		1						
0.085	x		-0.085	y	=	85		
0.075	x		+0.085y	=	915		
Add the two equations								
0.16	x=	1000		
/	0.16							
x	=	6,250.00						
plug value of 	x	in (1)				
x-y=1000		
6250-y=	1000		
-y=1000	-6250
-y=-5250		
y=5250.00