Question 790273
Part I	3.00%		per annum	-------------	Amount invested =x		
Part II	5.00%		per annum	------------	Amount invested = y		
	28000						
Interest-----	1240.00						
							
Part I	3.00%		per annum	---x			
Part II	5.00%		per annum	---y			
Total investment							
x	+	1	y=	28000	-------------1		
Interest on both investments							
3.00%	x	+	5.00%	y=	1240		
Multiply by		100					
3	x	+	5	y=	124000.00	--------2	
Multiply (1) by			-3				
we get							
-3	x	-3	y=	-84000.00			
Add this to (2)							
	2	y=	40000			
divide by		2					
			y	=	20000	 -	x)
Part I	3.00%	$	8000				
Part II	5.00%	$	20000				
							
CHECK							
8000	---------	3.00%	-------	240.00			
20000	-------------	5.00%	-------	1000.00			
Total			--------------------	1240.00