Question 764872
Part I	4.00%		per annum	-------------	Amount invested =x		
Part II	2.00%		per annum	------------	Amount invested = y		
	2600						
Interest-----	84.00						
							
Part I	4.00%		per annum	---x			
Part II	2.00%		per annum	---y			
Total investment							
x	+	1	y=	2600	-------------1		
Interest on both investments							
4.00%	x	+	2.00%	y=	84		
Multiply by		100					
4	x	+	2	y=	8400.00	--------2	
Multiply (1) by			-4				
we get							
-4	x	-4	y=	-10400.00			
Add this to (2)							
0	x	-2	y=	-2000			
divide by		-2					
			y	=	1000		
Part I	4.00%	$	1600				
Part II	2.00%	$	1000				
							
CHECK							
1600	---------	4.00%	-------	64.00			
1000	-------------	2.00%	-------	20.00			
Total			--------------------	84.00