Question 618298
CD	4.00%		per annum	-------------	Amount invested =x	
Savings bond	7.00%		per annum	------------	Amount invested = y	
	11000					
Interest-----	660					
						
CD	4.00%		per annum	---x		
Savings bond	7.00%		per annum	---y		
Sum of investments						
x	+	y=	11000	-------------1	
Interest earned on both investments						
4.00%	x	+	7.00%	y=	660	
Multiply by		100				
4	x	+	7	y=	66000.00	--------2
Multiply (1) by			-4			
we get						
-4	x	-4	y=	-44000.00		
Add this to (2)						
0	x	3	y=	22000		
divide by		3				
			y	=	7333.33	
CD	7.00%	$	7333.33			
Savings bond	4.00%	$	3666.67			
						
CHECK						
7333.33	---------	7.00%	-------	513.33		
3666.67	-------------	4.00%	-------	146.67		
Total			--------------------	660.00		
						
m.ananth@hotmail.ca