Question 732810
Part I	6.00%		per annum	-------------	Amount invested =x	
Part II	4.00%		per annum	------------	Amount invested = y	
	2800					
Interest-----	152.00					
						
Part I	6.00%		per annum	---x		
Part II	4.00%		per annum	---y		
Total investment						
x	+	1	y=	2800	-------------1	
Interest on both investments						
6.00%	x	+	4.00%	y=	152	
Multiply by		100				
6	x	+	4	y=	15200.00	--------2
Multiply (1) by			-6			
we get						
-6	x	-6	y=	-16800.00		
Add this to (2)						
0	x	-2	y=	-1600		
divide by		-2				
			y	=	800	
Part I	6.00%	$	2000			
Part II	4.00%	$	800			
						
CHECK						
2000	---------	6.00%	-------	120.00		
800	-------------	4.00%	-------	32.00		
Total			--------------------	152.00