Question 866234
Part I	7.50%		per annum	-------------	Amount invested =x		
Part II	8.00%		per annum	------------	Amount invested = y		
	10000						
Interest-----	780.00						
							
Part I	7.50%		per annum	---x			
Part II	8.00%		per annum	---y			
Total investment							
x	+	1	y=	10000	-------------1		
Interest on both investments							
7.50%	x	+	8.00%	y=	780		
Multiply by		100					
7.5	x	+	8	y=	78000.00	--------2	
Multiply (1) by			-7.5				
we get							
-7.5	x	-7.5	y=	-75000.00			
Add this to (2)							
0	x	0.5	y=	3000			
divide by		0.5					
			y	=	6000		
Part I	7.50%	$	4000				
Part II	8.00%	$	6000				
							
CHECK							
4000	---------	7.50%	-------	300.00			
6000	-------------	8.00%	-------	480.00			
Total			--------------------	780.00			
							
m.ananth@hotmail.ca