Question 723850
Part I	3.00%		per annum	-------------	Amount invested =x		
Part II	4.00%		per annum	------------	Amount invested = y		=
	90000						
Interest-----	3100						
							
Part I	3.00%		per annum	---x			
Part II	4.00%		per annum	---y			
Total investment							
x	+	1	y=	90000	-------------1		
Interest on both investments							
3.00%	x	+	4.00%	y=	3100		
Multiply by		100					
3	x	+	4	y=	310000.00	--------2	
Multiply (1) by			-3				
we get							
-3	x	-3	y=	-270000.00			
Add this to (2)							
0	x	1	y=	40000			
divide by		1					
			y	=	40000		
Part I	3.00%	$	50000				
Part II	4.00%	$	40000				
							
CHECK							
50000	---------	3.00%	-------	1500.00			
40000	-------------	4.00%	-------	1600.00			
Total			--------------------	3100.00			
							
m.ananth@hotmail.ca