Question 632787
Card I	9.00%		per annum	-------------	Amount invested =x	
Card II	12.00%		per annum	------------	Amount invested = y	
	11000					
Interest-----	1140					
						
Card I	9.00%		per annum	---x		
Card II	12.00%		per annum	---y		
Credit on both cards						
x	+	1	y=	11000	-------------1	
Interestto be paid on both						
9.00%	x	+	12.00%	y=	1140	
Multiply by		100				
9	x	+	12	y=	114000.00	--------2
Multiply (1) by			-9			
we get						
-9	x	-9	y=	-99000.00		
Add this to (2)						
0	x	3	y=	15000		
divide by		3				
			y	=	5000	
Card I	9.00%	$	6000			
Card II	12.00%	$	5000			
						
CHECK						
6000	---------	9.00%	-------	540.00		
5000	-------------	12.00%	-------	600.00		
Total			--------------------	1140.00		
						
m.ananth@hotmail.ca