Question 469086
x+y=20000	------------------------1				
10.00%	x+8.00%	y	=	$1,840.00			
Multiply by 	100							
10x+8y=	$184,000.00		--------2	
									
Multiply (1) by	-10						
we get									
									
-10x-10	y=-200000.00			
									
Add this to (2)									
									
-2y=-$16,000.00			
									
divide by		-2							
									
y	=		$8,000.00	investment at 	8.00%
Balance			$12,000.00	investment at 	10.00%