Question 518744
Investment II	8.20%		per annum	---x				
Investment II	3.90%		per annum	---y				
								
x		+	y=	20000	------------------------1			
8.20%	x	+	3.90%	y=	=	$1,000.00		
Multiply by 		100						
8.2	x	+	3.9	y=	=	$100,000.00		--------2
								
Multiply (1) by			-8.2					
we get								
								
-8.2	x	-8.2	y=	=		-164000.00		
								
Add this to (2)								
								
0	x	-4.3	y=	=		-$64,000.00		
								
divide by		-4.3						
								
			y	=		$14,883.72		investment at 
Balance			$5,116.28					investment at 
CHECK								
$5,116.28	---------	8.20%	-------	$419.53				
$14,883.72	-------	3.90%	-------	$580.47				
Total			-------	$1,000.00