Question 715502
Part I	6.00%		per annum	---x		
Part II	5.00%		per annum	---y		
Total investment						
x	+		y=	4000	-------------1	
Interest on both investments						
6.00%	x	+	5.00%	y=	215	
Multiply by		100				
6	x	+	5	y=	21500.00	--------2
Multiply (1) by			-6			
we get						
-6	x	-6	y=	-24000.00		
Add this to (2)						
0	x	-1	y=	-2500		
divide by		-1				
			y	=	2500	
Part I	6.00%	$	1500			
Part II	5.00%	$	2500			
						
CHECK						
1500	---------	6.00%	-------	90.00		
2500	-------------	5.00%	-------	125.00		
Total			--------------------	215.00