Question 509620
Investment II	8.00%		per annum	---x					
Investment II	7.00%		per annum	---y					
									
x+y=	10000	------------------------1				
8.00%	x	+	7.00%	y	=	$720.00			
Multiply by 		100							
8	x	+	7	y	=	$72,000.00		--------2	
									
Multiply (1) by			-8						
we get									
									
-8x-8y	=-80000.00			
									
Add this to (2)									
									
0	x	-1	y	=		-$8,000.00			
									
divide by		-1							
									
y	=		$8,000.00	investment at 	7.00%
Balance			$2,000.00 	investment at 	8.00%
CHECK									
$2,000.00	---------	8.00%	-------	$160.00					
$8,000.00	-------	7.00%	-------	$560.00					
Total			-------	$720.00