Question 542438
Investment I	5.00%		per annum	---x						
Investment II	6.00%		per annum	---y						
										
x		+	y=	120000	------------------------1					
5.00%	x	+	6.00%	y=	=	$6,700.00				
Multiply by 		100								
5	x	+	6	y=	=	$670,000.00		--------2		
										
Multiply (1) by			-5							
we get										
										
-5	x	-5	y=	=		-600000.00				
										
Add this to (2)										
										
0	x	1	y=	=		$70,000.00				
										
divide by		1								
										
y	=		$70,000.00		investment at 	6.00%	
Balance			$50,000.00		investment at 	5.00%	
CHECK										
$50,000.00	---------	5.00%	-------	$2,500.00						
$70,000.00	-------	6.00%	-------	$4,200.00						
Total			--------------	$6,700.00