Question 518727
Investment I	8.00%		per annum	---x					
Investment II	5.00%		per annum	---y					
									
x		+	y=	16000	------------------------1				
8.00%	x	+	5.00%	y=	=	$1,130.00			
Multiply by 		100							
8	x	+	5	y=	=	$113,000.00		--------2	
									
Multiply (1) by			-8						
we get									
									
-8	x	-8	y=	=		-128000.00			
									
Add this to (2)									
									
0	x	-3	y=	=		-$15,000.00			
									
divide by		-3							
									
			y	=		$5,000.00		investment at 	5.00%
Balance			$11,000.00					investment at 	8.00%
CHECK									
$11,000.00	---------	8.00%	-------	$880.00					
$5,000.00	-------	5.00%	-------	$250.00					
Total			-------------------	$1,130.00