Question 863519
Part I	7.00%		per annum	-------------	Amount invested =x		
Part II	8.00%		per annum	------------	Amount invested = y		
	15000						
Interest-----	1140.00						
							
Part I	7.00%		per annum	---x			
Part II	8.00%		per annum	---y			
Total investment							
x	+	1	y=	15000	-------------1		
Interest on both investments							
7.00%	x	+	8.00%	y=	1140		
Multiply by		100					
7	x	+	8	y=	114000.00	--------2	
Multiply (1) by			-7				
we get							
-7	x	-7	y=	-105000.00			
Add this to (2)							
0	x	1	y=	9000			
divide by		1					
			y	=	9000		
Part I	7.00%	$	6000				
Part II	8.00%	$	9000				
							
CHECK							
6000	---------	7.00%	-------	420.00			
9000	-------------	8.00%	-------	720.00			
Total			--------------------	1140.00			
							
m.ananth@hotmail.ca